Kīlauea Iki Trail

The Kīlauea Iki Trail on the Big Island of Hawaii offers an otherworldly experience: the chance to hike directly across a solidified, still-steaming lava lake inside a volcanic crater. In 1959, this crater erupted sustainedly, shooting fountains of lava 1,900 feet into the air and filling the basin with a fiery lake. Today, the surface has crusted over into a jagged floor of jet-black 'pahoehoe' (smooth) and 'a'a' (sharp) lava rock. The hike begins in a dense, lush, tropical rainforest of native ohia trees and giant hapu'u tree ferns along the crater's rim before plunging 400 feet down the steep walls. Hikers then follow a path marked by stone cairns ('ahu') directly across the desolate, cracked, steaming expanse of the crater floor, walking over active volcanic vents.

Route Typology: Developed Volcanic Crater Access. Among the most accessible active volcanic craters globally, Poás Volcano offers a direct look at the dynamics of active volcanology from a structured environment. A well-maintained, almost entirely paved trail leads from the modern visitor center through a unique, stunted cloud forest to the main crater rim at 2,708m. The primary attraction is the mile-wide active crater containing Laguna Caliente, a steaming, acidic lake that frequently vents sulfur dioxide. An additional loop leads through the mossy highland vegetation to Laguna Botos, a dormant crater lake that contrasts sharply with the active volcanic landscape. Due to volatility, access is strictly regulated and timed by SINAC park rangers.