this case Yellowstone could be expiring. It could be another 1–2 million years (as the North American Plate moves across the Yellowstone hotspot) before a new supervolcano is born to the northeast, and the Yellowstone Plateau volcanic field joins the ranks of its deceased ancestors in the Snake River Plain. A 2020 study suggests that the hotspot may be waning. Eruptive history Wapi Lava field and King's Bowl blowout, northeast of Rupert, Idaho; 2.270 ka ±0.15. (2,270 years ago) Hell's Half Acre lava field, west to southwest of Idaho Falls; 3.250 ka ±0.15. (3,250 years ago) Shoshone lava field, North of Twin Falls, Idaho; 8.400 ka ±0.3. Craters of the Moon National Monument and Preserve; Great Rift of Idaho; the lava field was formed during eight eruptive episodes between about 15 and 2 ka. Kings Bowl and Wapi lava fields formed about 2.250 ka. Yellowstone Caldera; between 70 and 150 ka; intracaldera rhyolitic lava flows. Yellowstone Park Yellowstone Caldera (size: 45 x 85 km); 640 ka; VEI 8; more than of Lava Creek Tuff. Henry's Fork Caldera (size: 16 km wide); 1.3 Ma; VEI 7; of Mesa Falls Tuff. Island Park Caldera Harriman State Park Island Park Caldera (size: 100 x 50 km); 2.1 Ma; VEI 8; of Huckleberry Ridge Tuff. Heise volcanic field, Idaho: Kilgore Caldera (size: 80 x 60 km); VEI 8; of Kilgore Tuff; 4.45 Ma ±0.05. 4.49 Ma tuff of Heise 5.37 Ma tuff of Elkhorn Springs 5.51 Ma ±0.13 (Conant Creek Tuff) (but Anders (2009): 5.94 Ma) 5.6 Ma; of Blue Creek Tuff. 5.81 Ma tuff of Wolverine Creek 6.27 Ma ±0.04 (Walcott Tuff). 6.57 Ma tuff of Edie School Blacktail Caldera (size: 100 x 60 km); 6.62 Ma ±0.03; of Blacktail Tuff. 7.48 Ma tuff of America Falls 8.72 Ma Grey's landing Ignimbrite; VEI 8. At least of volcanic material. 8.75 Ma tuff of Lost River Sinks 8.99 Ma, McMullen Supereruption; VEI 8. At least of volcanic material. 9.17 Ma tuff of Kyle Canyon 9.34 Ma tuff of Little Chokecherry Canyon Twin Falls volcanic field, Twin Falls County, Idaho; 8.6 to 10 Ma. Picabo volcanic field, Picabo, Idaho; 10.09 Ma (Arbon Valley Tuff A) and 10.21 Ma ±0.03 (Arbon Valley Tuff B). Bruneau-Jarbidge volcanic field, Bruneau River/ Jarbidge River, Idaho; 10.0 to 12.5 Ma; Ashfall Fossil Beds eruption. Owyhee-Humboldt volcanic field, Owyhee County, Idaho, Nevada, and Oregon; around 12.8 to 13.9 Ma. McDermitt volcanic