Wah Wah Springs Caldera

{{Short description|Caldera in the state of Utah}}

File:Rain_in_the_Wah_Wah_Valley.jpg

Wah Wah Springs Caldera is a supervolcanic eruption remnant discovered in 2013 in Utah. It released {{convert|5500 to 5900|km3|mi3}} of tephra, as the Wah Wah Springs Tuff, about 30.06 million years ago in the early Oligocene. It is the largest of the Indian Peak-Caliente Caldera Complex, and includes flows over 500 m (1,640 feet) thick at the most. It is considered one of the largest single explosive eruptions known in Earth's history, and the second most energetic event to have occurred on Earth since the asteroid impact at the end of the Cretaceous period.{{Cite journal|title=The 36–18 Ma Indian Peak–Caliente ignimbrite field and calderas, southeastern Great Basin, USA: Multicyclic super-eruptions|first1=Myron G.|last1=Best|first2=Eric H.|last2=Christiansen|first3=Alan L.|last3=Deino|first4=Sherman|last4=Gromme|first5=Garret L.|last5=Hart|first6=David G.|last6=Tingey|date=August 1, 2013|journal=Geosphere|volume=9|issue=4|pages=864–950|doi=10.1130/GES00902.1|bibcode=2013Geosp...9..864B|doi-access=free}}{{Cite web|url=https://geology.com/stories/13/volcanic-explosivity-index/|title=Volcanic Explosivity Index: Measuring the size of an eruption|website=geology.com}}