Pahntakai literally means “under the rock” and one visit makes it immediately apparent why this geologically-unique location was given its name. A thin waterfall plummets over a concave cliff-wall more than 30 meters high, which shelters a wide strip of mostly flat ground. You can walk all the way across beneath the cliff to where the ledge widens even more and a small, rocky hill rises up north of the waterfall. Yawning caverns behind the falls host colonies of small insect-eating bats and Caroline Islands Swiftlets that hurry out at dusk to hunt for insects. If you want a closer look, you can climb up through the mounds of guano to the cave openings.
The waterfall itself varies greatly in volume, depending on rain, crashing onto jumbles of rocks below the ledge. It is possible to climb down the slope and stand under the water, but the rocks are slippery and dangerous and there is no pool.
The trail is found at the end of the road and is well-maintained and fairly level most of the way to the cave, skirted by several varieties of sakau (kava) and affording stunning views of the deep gorge below the falls, small huts on the steep hillsides, and the blue sea far out beyond the green of the island. Though you do not need a guide or any special permission to do this hike, the site is private property and the family at the last house on the road charges an entry fee of $3.00 per visitor. Make sure you bear left at the trailhead, rather than taking the path to the right which goes steeply downhill and eventually leads to a house. The hike takes a leisurely 40 minutes round-trip, but Pahntakai is so magical you’ll probably want to hang around and soak up the atmosphere.
Camping
The landowner, Pedro Marvis, permits visitors to camp overnight at Pahntakai, provided they are quiet and respectful of the place and take all their garbage with them afterward. The price per person is the same as when making a day visit — $3.00. The best place to camp is at the northwest end of the trail, where the strip of ground under the cliff is wide and flat. There’s a rock fire-pit there and sometimes some dry firewood left lying around. Because of the overhanging nature of the cliff, things stay dry even during heavy rain. There is one small stream that crosses the main trail about half-way from the trailhead — a good place to filter drinking water if you’re going to stay at Pahntakai a while.