Hell's Half Acre

Hell's Half Acre (United States) is a shield volcano. It rises to 1,632 m above sea level. The GVP records 1 confirmed eruption in the Holocene, the latest in 3,250 BCE.

Elevation: 1,632 m
Last eruption: 3,250 BCE
Confirmed eruptions: 1
Max VEI: 0
Country: United States
Location: 43.49° N, 112.45° W
Region (GVP): Yellowstone-Snake River Hotspot Volcano Group
GVP type: Shield
Tectonic setting: Rift zone / Continental crust (> 25 km)
Main rock type: Basalt / Picro-Basalt

Show on the timeline GVP entry ↗

Other volcanoes and strong earthquakes within 300 km

Eruption history

VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.

Start	End	VEI	Vent and dating
3,250 BCE ± 150 years	—	0	Isotopic: 14C (uncalibrated)

Data: Global Volcanism Program, Smithsonian Institution (#324040)