Photogrammetry-derived digital elevation models and source images for an inactive perched lava lake formed at Pu'u'o'o (Kilauea) in 2014
Lava flow hazards are usually thought to end when the erupting vent becomes inactive, but this is not always the case. At Kilauea in August 2014, a spiny 'a'a flow erupted from the levee of a crusted perched lava lake that had been inactive for a month, and the surface of the lava lake subsided as the flow advanced …