Guided hikes of Kīlauea Iki Crater. The four-mile (6.4 km) Kīlauea Iki Trail is one of the park’s iconic hiking trails, a popular destination for hikers who cross a steaming crater floor through the intersection of eruption and native rainforest.

Most leave without knowing how the crater was formed, or how three eruptions since 1823 have filled it with more than 400 feet (120 m) of lava. Delve into the secrets of Kīlauea Iki with Park Ranger Michael Newman. Discover how fountains of lava from the giant brick-red cone, Pu‘u Pua‘i, jetted up 1,900 feet (579 m) in 1959 and left behind a 50-foot (15 m) bathtub ring of lava residue on the crater walls. Moderately difficult with an elevation gain of 400 feet (120 m).

Free (park entrance fees apply except January 20).

When: Mondays, January 6, 13, 20 & 27 at 10 a.m.

Where: Meet Ranger Michael at the Kīlauea Iki Overlook parking lot.