The Thomas A. Jaggar Museum is a museum on volcanology with displays of equipment used by scientists in the past to study the volcano, working seismographs, and an exhibit of clothing and gear from scientists who got a bit too close to lava. The overlook, outside the building, offers an incredible view of the main crater, Halema’uma’u. Along the rim there were interpretive displays about KÄ«lauea, one of the world’s most active volcanoes. We were hoping to see the lava but they keep you a safe distance from it.