In September 1998 I visited Hawai'i with my best friend Rennie (who has a much better website than I do). Our first stop was Volcanoes National Park on the Big Island, where we hiked around and through craters on a live volcano.
Kilauea Iki is a small crater ("iki" means "small" in Hawai'ian) that last erupted in 1959. The surface is like a parking lot with a bad case of frost heaves, except that it feels hollow when you stamp your feet and steam wafts up through the cracks. It's not a soothing place to hike, at least not until you've crossed the crater and are back up in the rain forest.
(And yes, my eyes are closed in this picture; I have a real gift
for blinking just as people are taking my picture. Once I learn to
use a photo-manipulation program I'll paint my baby blues back in.)