Nankepinmerepw River Valley

Hiking / TrekkingWaterfallBird-WatchingCamping

Hikers in the Nankepinmerepw Valley, Pohnpei, Federated States of Micronesia (FSM)
This route passes through the gorgeous valley of Nankepinmerepw, following the upper tributaries of the Nan Riohk Stream (Pilen Nan Riohk) and eventually arriving north of Nahnalaud on an arm of the major mountain system. One guide stated that the valley’s name refers to the mworopw tree (Inocarpus fagifer), also known as the Polynesian chestnut — though the spelling is clearly different. Nankepin means “in the bottom of”; the mworopw leaf has a deep trough in the middle where the primary vein bisects the blade, mirroring the way the stream bisects the deep, narrow valley.

The hike begins at a rutted turn-off from the well-graded (but unpaved) road to Pahn Sile Waterfall, leads to a metal footbridge over the Senipehn River (Pillapen Senipehn) — the only bridge like it on the island — and connects with a path on the far side. From there, the trail meanders northwest not far from the Nan Riohk and more or less parallel to it.

The first kilometer or so cuts through cultivated lands. Then it begins to follow the water more closely as it passes into the wilder riverine forests. There are at least nine major stream crossings in this next segment, some of which may be difficult or impossible if there has been a lot of recent rain. Above the last major Nan Riohk tributary, where the name of the stream changes to Nankepinmerepw, hikers take to the stream bed itself, which is certainly the most challenging aspect of the route (13% slope average). The algae-slimed rocks are slick and dangerous and hikers may find that they have to go very slow and use both hands to avoid disastrous slips; it would be easy to snap an ankle or shatter a kneecap in this place. Despite the rough terrain, the scenery in the hidden valley, often fenced on both sides by high rocky walls, is terrific. At times, the trail passes along the tops of vertical prismatic basalt columns.

Above Nankepinmerepw Waterfall, Pohnpei, Federated States of Micronesia (FSM)
The first few points of interest are beautiful pools that will tempt any overheated hiker — and why resist? A bit further is a small waterfall near an outcropping of prismatic basalt. Informants in the area say that this location was one of many where prismatic basalt columns were quarried for use in the building of Nan Madol. Abandoned prisms can be found lying in the stream bed in several places — the largest just below the falls. How exactly the massive prisms were hauled down to the coast over such distances and through such rough terrain is anyone’s guess.

After a short, steep section (22% slope average), the valley terminates at a huge “horsetail” waterfall that the route crosses above (you can scramble down the eastern slope without too much difficulty for a better view from the side). The shallow pools above the falls are an excellent place for a look at Pohnpei’s native crayfish. This is the turn-around point for day-hikers.

Past the big waterfall, the stream narrows until it reaches a third waterfall — this one short and wide, falling over a straight lip (usually called a “block falls” or “sheet falls”) — and then diminishes to a trickle. Those who wish to go further, will climb to the west (29% slope average) and then south again to follow the ridgeline (18% slope average) toward Nahnalaud.

Map Guides >> (Central) Madolenihmw >> Nankepinmerepw

Madolenihmw Bay Area

BikingHiking / TrekkingCave, Tunnel or BunkerWorld War II FortificationsArchaeological Site / RuinBird-WatchingCampingSwimmingSnorkelingSCUBA divingKayaking / CanoeingSurfingPicnickingBeachesMarine Reserve

Dauen Sapwalap / Senipehn Mangrove Reserve

  • Visit the Paddling Around Madolenihmw page for a detailed description of this location and the adventures to be had in the area.
  • Entering the mangrove reserve requires a permit. Visit our MPA page for details.

Kamau Pwoungapwoung

Though we didn’t map the hike to this destination as part of the eco-adventure map series (for lack of time), it would, never the less, be an exciting adventure to consider. Kamau Pwoungapwoung refers to a freshwater pool and waterfall at the headwaters of the Dipwilap Stream (Pilen Dipwilap), one of the tributaries of the Senipehn River (Pillapen Senipehn). The place is significant as the location where the last battle between the Saudeleur‘s warriors and Isokelekel’s men was fought. Upon being defeated by Isokelekel, the Saudeleur transformed himself into a small blue fish, that inhabits the pool to this day, and leaped into the waterfall. The hike would be a long one from the area around Pahn Sile. The closest access point would probably be from the direction of Nihpit fern meadow (reached from eastern Kitti).

  • The absolute best choice for a guide is Relio Lengsi. Give him a call at +691.924.2580 and discuss the best route options and access points for this location. Offer $50.00 for a full-day hike.

Nanpahlap Peak

The 137 m (449 ft) hill to the east of Takaiuh looks as if its top has been lopped off — which fits in with the story about its creation (see Takaiuh below). Though steep in places and somewhat overgrown, the ascent isn’t too strenuous. At the summit are the tumbled ruins of a prehistoric stone structure and a breath-taking view. The whole area around the southern foot of the hill is criss-crossed with Japanese trenches and dotted with tunnels, including at least one very long one leading into the hill. The grid of paddies and irrigation canals where the Japanese successfully cultivated rice (despite Pohnpei’s challenging climate conditions) are found on both sides of the unpaved access road, though you can get closest to the bulk of these fields from another road to the west.

Everything is private land, but no official access fees are charged.

  • To hire a guide, ask at the houses in the area or contact Hanke Albert at +691.320.4047. Offer $25.00 for Nanpahlap or a half-day of exploration in the area.

Nanwap Marine Protected Area (MPA)

Nanwap Marine Protected Area is a 3.05 km2 (305 hectare) section of the barrier reef and adjacent lagoon areas on the north side of Kepidauen Deleur (passage). The sanctuary was founded by community members from Metipw and Lukop and their respective chiefs and gained legal status in 2010. It became the first of Pohnpei’s MPAs to have its own formal community-created management plan with the support of the Pohnpei MPA Executive Management Network and the state offices of the Department of Land and Natural Resources, Division of Fish and Wildlife, Office of Fisheries and Aquaculture, and Environmental Protection Agency. Nanwap is a “no-take zone,” which means no fishing or gathering of any kind is allowed within the boundaries. It is regarded as the “most biologically diverse and best preserved spawning and aggregation site” for many of Pohnpei’s core reef fish species. Snorkelers should seek out the protected blue holes on the west side of the reef, while SCUBA divers will want to do a drift dive on the southern wall of the reef during an in-coming tide.

  • Entering the MPA requires a permit. Visit our MPA page for details.

Pahn Dieinuh

Boys roll tires for a game, Madolenihmw, Pohnpei Island, Federated States of Micronesia (FSM)

Peiai

Peiai is a small populated place near the turn-off for Pahn Sile waterfall. During the battle between the warriors of Isokelekel and the army of the last Saudeleur, Peiai was the place where the tide of battle turned dramatically (hence, the name references a situation where the runner-up in a race pulls ahead of the leader — loosely translated “the battle is reversed”). Isokelekel’s men were being beaten down by the forces of Nan Madol when one of the conqueror’s greatest fighting men pinned his own foot to the ground with his spear, refusing to retreat and declaring that he would kill any man who tried to run away from the fight. Isokelekel’s men rallied behind this show of bravery and pushed back the Saudeleur‘s warriors, chasing them up the Senipehn River and eventually to Kamau Pwoungapwoung, a waterfall at the headwaters of the Dipwilap Stream, where the Saudeleur was finally defeated.

Sapwalap

Sapwalap (“large land”) is an expansive region of mostly flat ground that makes up a sizable chunk of central Madolenihmw. The Japanese recognized Sapwalap‘s potential as a site of large-scale agriculture. During the thirty years leading up to World War II, sugarcane was cultivated and processed at a facility near Kitamw (the tower is still partly visible in the jungle off the road) and rice was grown in a patchwork of paddies fed by irrigation canals. Strangely, no one is growing rice these days, but the paddies are still there opposite the gleaming LDS Church. Other fields are found as far east as Lukop.

Takaiuh peak, Madolenihmw, Pohnpei Island, Federated States of Micronesia (FSM)

Tahio

Tahio, on the south side of Nanpahlap, is another place where the Japanese were active. The access road was built by them and the coastal area is full of trenches, rifle pits, dugouts, and tunnels. Everything is overgrown, but anyone who pokes around will be rewarded with interesting finds. Bring a local resident along.

Takaiuh Peak

You can’t visit Madolenihmw without being arrested by the sight of Takaiuh, a 160 m (525 ft) peak shaped like a traffic cone that stands on the north side of the bay and seems to guard the entrance to the Sapwalap estuary. The mythical origin-story of the hill — which bears a striking resemblance to the Biblical tale of the tower of Babel — involves Mwohnmur and Sarapwau, two wily brothers who enter into many Pohnpeian legends (they also created the Sahwar Valley and the rock of Pohnpaip).

How Takaiuh Came to Be

Long ago, two boys named Mwohnmur and Sarapwau were born in Salapwuk (Kitti) to a woman named Lienlama. The boys were always involved in clever schemes and mischief and traveled far and wide doing great works. Once, the brothers took a piece of stone, and using it like a canoe, paddled to Pohndolen Imwinsapw near what is now Tahio in Madolenihmw. There, Mwohnmur and Sarapwau amused themselves by piling up rocks until they had formed a large hill. A local demi-god named Lapongo saw what they were doing and wasn’t pleased, so he threw a stone at their hill and destroyed it. He then challenged the brothers to a competition to see who could build a mountain the fastest. The three set to work, but it soon became apparent that the boys were winning. Their mountain was so tall it had reached the sky. Being a poor loser, Lapongo became enraged. He picked up a stone and threw it at the new mountain, which broke into six pieces. The base of the mountain that remained standing was named Takaiuh (“standing stone”).

This was not the end of the conflicts between the brothers and Lapongo, however. Lapongo mocked and ridiculed the boys whenever he could, and they did not like it. Now, the brothers liked to play at a place called Pahnlikes, below the spot where they had settled on Likes peak west of modern-day Sapwalap. There was a steep slope there that they would slide down for fun, sitting upon the leaf sheaths of the kotop palm (Clinostigma ponapensis). The boys knew that Lapongo had been watching them and was aware of their play place, so they decided to trick him. Lapongo was invited to slide down the slope with the boys, but they chose a spot where the slope ended at the waterside (possibly the southern tributary of Pilen Kitamw). All three began sliding down the hill. When Mwohnmur and Sarapwau reached the bottom, they leaped off their sheaths and dived to safety, but Lapongo went straight and fell into the water. He sank down into the depths, and the brothers threw rocks on top of him to keep him from resurfacing.

Takaiuh is actually an island separated from the coast by a strip of mangrove forest. It was once inhabited, but is no longer. Though the hill is climbable, the ascent is extremely dangerous, characterized by very steep slopes and cliffs prone to rockslides with little or nothing solid to hold on to. For this reason we strongly advise visitors to enjoy Takaiuh from below rather than trying for the summit. Hikers who insist on seeking the summit, do so at their own risk. Distant views of the peak are found along the Circle Island Road, but the best close-up view from land is from the old Japanese road in Kepine. According to residents living in the area, the Japanese abandoned an attempt to build a trail all the way to the top of the hill. Some of the low wall can still be seen on the lower slope.

Map Guides >> Central Madolenihmw >> Madolenihmw Bay Area

Dolen Merewi

BikingHiking / TrekkingWorld War II FortificationsBird-WatchingCamping

A gigantic banyan tree on Dolen Merewi, Pohnpei, Federated States of Micronesia (FSM)

Dolen Merewi is a flat-topped hill that stands apart from the interior mountains to the west and is highly conspicuous when driving through northeastern Madolenihmw. During the Spanish Period (1886-1898), the hill played a pivotal role in an armed conflict centered around Ohwa. During the fighting, Nahnmwarki Pol, the Protestant leader of Madolenihmw, took refuge on the summit of Dolen Merewi where it was said he prayed in earnest for the Catholics to be defeated. Though the Spanish claimed a victory in the end, they lost a great many men and the better part of their dignity. They never got what they wanted and spent the rest of their administration barricaded inside their dreary colony, Santiago de la Ascencion, at what is now modern-day Kolonia.

An unpaved but well-graded road runs inland right to the base of Dolen Merewi, and almost anyone living in the area can assist visitors in finding a suitable guide on the spot. The ascent takes less than an hour and climbs steeply through upland sakau (Piper methysticum) plantations, karara (Myristica hypargyraea), sadak (Elaeocarpus carolinensis), and other large native hardwoods. At the top of the hill, the forest thins and the trail passes hastily-constructed Japanese foxholes, trenches, and rifle pits. The summit (240 m / 787 ft) is at the north end and has unobstructed views of Kupwuriso to the northwest, Timwen Men to the north, and the glistening bay in the east. Huge flying foxes roost in nearby trees and can be seen soaring low overhead. Birders will find Crimson-Crowned Fruit Doves and Micronesian Ground Doves in plenty. The summit is a nice camp site.

  • See the Birding page for more info about bird-watching on Pohnpei.

No access fee is charged.

  • Plan for 3 hours round-trip with a nice rest at the summit.
  • To hire a guide, ask at the houses in the area or contact Hanke Albert at +691.320.4047. Offer $12.00-15.00.

Map Guides >> Central Madolenihmw >> Dolen Merewi

Pahnsapw & Nankep Waterfalls

BikingHiking / TrekkingWaterfallSwimmingPicnicking

Lower Pahnsapw Falls, Pohnauleng, Pohnpei, Federated States of Micronesia (FSM)

Pahnsapw, which means “beneath the land,” refers to a pair of tall, majestic waterfalls which plummet off the edge of a high plateau in central Madolenihmw (it’s also the name of the farmstead). Both waterfalls are found on the land of the Silbanuz family (relatives of the people at the Nan Madol trailhead) — the smaller falls is lower down and hidden from view until you get up-stream, but the upper falls can be seen from the Circle Island Road.

The hike starts at the end of an unpaved road and criss-crosses the stream or runs along the bank up to the first falls, which is about 4 to 6 meters (13-20 ft) high and has a beautiful shallow pool at the base, excellent for a quick, cool swim. Unless you’re in good physical condition and don’t mind getting dirty, this is where you should stop.

Upper Pahnsapw Falls, Pohnauleng, Pohnpei, Federated States of Micronesia (FSM)

To reach the second falls, the route climbs straight up an extremely steep (and sometimes muddy) slope to the right of the lower waterfall with little to hold on to, turns horizontally across the slope face, and then returns to the river, where there’s a secluded pool in a shady nook. It might be a good idea to bring a length of rope and have the guide secure it to something at the top of the slope prior to scrambling up. Five minutes up-stream is the second waterfall, which is about 18 meters (60 ft) tall and falls into a large, deep pool. The water at both waterfalls is cool and very clean.

The Silbanuz family charges an access fee of $2.00 per person. Any of the teenagers around the house can be hired as guides. Offer $12.00.

  • Plan for 2 hours round-trip with some leisure time at both of the waterfall pools.

Nankep Waterfall

The next waterfall going south is known as Nankep. People living in the area say the name means “inlet” or “in the cup” (depending on who you talk to). The latter seems logical, except that the Pohnpeian word kep is a loaner from English and wouldn’t date back beyond the early 1800s. The site may have had a different name prior to that time or it has picked up new meaning over the years. The road to this trailhead is steeper and more rutted than the one to Pahnsapw, so it’s best to park at the bottom near the Circle Island Road and walk to the end, where the trail begins on Waltis Herdinand’s land — an area referred to as Elilpei. The hike is short and relatively easy, concluding in a hidden nook with a small plunge pool. The best time to visit Nankep is after a period of heavy rain as it can be nothing more than a tiny ribbon of water at other times. Some people believe that the falls will be dry if all the members of the visiting group are male, so mix it up.

No official access fee is charged.

  • Plan for 90 minutes round-trip with time to swim at the falls.
  • To hire a guide, ask at the houses in the area, contact Hanke Albert at +691.320.4047, or call the owner of the land around the falls, Waltis Herdinand, at +691.320.2909. Offer $12.00.

Map Guides >> Central Madolenihmw >> Pahnsapw & Nankep Waterfalls

Pohnpaip Petroglyphs

BikingHiking / TrekkingArchaeological Site / RuinBird-Watching

Anthropomorphic figure at Pohnpaip, Pohnpei, Federated States of Micronesia (FSM)

Just south of the newly renovated Sapwalap Elementary School lies one of Micronesia’s most unusual sites. More than 700 prehistoric motifs are inscribed on rocks in the area, the largest collection adorning a 60 by 25 meter naturally terraced basalt outcropping called Pohnpaip (“on the boulder”). Though the pictures are fading in the face of Pohnpei’s relentless rains, it’s still possible to discern human figures, feet, hands, fish hooks, a boat, the sun and moon, and many shapes that may be canoe paddles or loom pegs (often mistaken for daggers).

Different stories are told about the origin of this rock. In one, the outcropping was created when two mischievous brothers named Mwohnmur and Sarapwau — the same boys who created Takaiuh in the Kepine area and the Sahwar Gorge in Salapwuk — stole a blanket from Kitti decorated with strange symbols (some informants attribute this action to Olsihpa and Olsohpa instead of Mwohnmur and Sarapwau). The blanket was transformed into the rock with the symbols still intact. In another tale, Pohnpaip was the house of two men, Mahntik and Mahnlap, who passed into the rock through a magical door and traveled to a far land. Knocking with small stones at the location where the door to the house is purported to be produces a hollow sound as if there were, indeed, a cavity beneath the rock’s surface.

Enveloped cross on a boulder near Pohnpaip, Pohnpei, Federated States of Micronesia (FSM)

More petroglyphs are found on a collection of smaller boulders located in the grassy plain to the northeast. The large rock closest to Pohnpaip is called Takain Pahsu (“vagina rock”) and is said to be the genitalia of a mythical woman who broke into pieces. The woman’s buttocks are found on the other side of the road along with several other boulders with petroglyphic images. One is covered with enveloped equilateral crosses similar to those found in Vanuatu, New Caledonia, and the Solomon Islands, possibly indicating a link between the site and the Lapita culture active in the region about 2,000 years ago. To date, no one is sure who created the petroglyphs or when they were created. Rock art of this sort is uncommon in the Micronesian islands.

The road leading to the site was in very bad condition as of 2014. It’s best to park near the Circle Island Road and walk up. The Herson family, which owns the land around Pohnpaip, charges an access fee of $3.00 per person. You don’t need a guide, but more than likely someone at the house will show you up to the rock and other sites at no extra charge.

  • This excursion takes about 2 hours round-trip if you take your time and really examine all the images.
NOTE: There is an error on the printed Madolenihmw Eco-Adventure Guide maps for this location. “Vagina Rock” is labeled Takain Pahso (incorrect) instead of Takain Pahsu. We apologize for this mistake. Future versions of the print guide will reflect the correction.

Map Guides >> Central Madolenihmw >> Pohnpaip Petroglyphs

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