Water or no water: that is (or was) the question
Detailed Description
Aerial view of Halema‘uma‘u at the summit of Kīlauea taken during a USGS Hawaiian Volcano Observatory helicopter overflight on August 1, 2019. The small green patch visible at the bottom of Halema‘uma‘u is a new pond forming at the lowest point of the crater. The pond is at about 540 m (about 1772 ft) elevation. USGS photo by S. Conway.
Sources/Usage
Public Domain.