BackgroundThe small King's Bowl rift immediately to the north was also formed at about the same time along a central eruptive fissure flanked by two parallel non-eruptive fissures. This eruption produced a phreatic explosion that created Kings Bowl, an 80-m-long, 30-m-deep explosion crater.
The vent area of the Wapi field lies along the Great Rift of the Craters of the Moon and consists of 5 major and a half dozen minor vents covering an area of 0.5 km2. The largest of the vents contains several pit craters that truncate lava lakes that filled the crater.
Pillar Butte, a mass of layered lava flows and agglutinates, forms the high point of the lava shield. The Split Butte maar to the west is partially overlapped by flows of the Wapi lava field.
Source: GVP Wapi volcano information
See also: Sentinel hub | Landsat 8