Increased surface activity in Halema‘uma‘u

An HVO geologist measures the elevation of the Halema'uma'u lava lake using a laser rangefinder. This morning, January 12, the lava lake is about 196 m (643 ft) deep. HVO scientists continue to monitor the eruption within an area of Hawai‘i Volcanoes National Park that remains closed to the public for safety reasons. USGS photo by M. Patrick.