A thermal image taken during HVO’s overflight of KÄ«lauea Volcano’s ocean entry on Jan. 25, 2017, revealed a hot ground crack in the sea cliff just above where lava is flowing into the sea. Because the crack suggested an unstable sea cliff, HVO geologists briefly visited the site on foot for closer observations and measurements this past weekend. Photo taken Monday, January 30, 2017 courtesy of USGS/HVO