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Hell's Half Acre Volcano - John Seach
Idaho, USA
43.50 N, 112.45 W
summit elevation 1631 m
Shield volcano
Hell's Half Acre volcano contains an 800 m x 300 m depression which contains evidence of a former lava lake. Two lava tube systems are located near the summit.
Hell's Half Acre Volcano Eruptions
3250 BC ± 150