Ka‘aha is located on the southern coastline of the park, 3.6 miles from the trailhead at the end of Hilina Pali road. The hike begins with a steep downhill trail that switches back 24 times to the base of the pali (cliff). Along the trail you will be hiking through mostly non-native grasses dotted with native ‘ōhi‘a trees. Two thirds of the way down you will find your only chance for shade on this hot, dry, windy trail under a large ‘ōhi‘a tree.
The rest of the hike is a gradual downhill slope to the coast. Ka‘aha has a rocky shoreline with a well protected cove that has some great snorkeling. You may find green turtles swimming in the cove, or resting on the shore. There are no trees in the area to provide shade, but the shelter on the hillside is a nice place to get out of the elements. Ants are extremely abundant, although they do not bite, or sting, but they will crawl on anything (including you) on the ground. The trail out is uphill the entire way and feels like five miles in the intense sun. We recommend you avoid hiking in the mid-day sun.
Ka‘aha can be accessed from several trailheads:
Hilina Pali Overlook Trailhead via Hilina Pali Trail and Ka‘aha Trail 3.6 mi (5.8 km)
Mau Loa o Maunaulu Trailhead via Keauhou Trail, Hilina Pali Trail, and Ka‘aha Trail 11.5 mi (18.2 km)
Puʻuloa Trailhead via the Puna Coast Trail, Keauhou Trail, Hilina Pali Trail, and Ka‘aha Trail 17.4 mi (28.0 km)
Campers may stay a maximum of 3 consecutive nights per site. A total of 16 hikers are allowed per night at Ka`aha.