supervolcano · All Facts

supervolcano
Yellowstone sits on a supervolcano that erupts roughly every 600,000 years. The last eruption was 640,000 years ago.
SrcUSGS

Next evidence →longest riverThe Nile and the Amazon compete for the title of longest river. The Nile is traditionally cited at 4,130 miles, but recent surveys suggest the Amazon may be longer.

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More in Geography

longest riverThe Nile and the Amazon compete for the title of longest river. The Nile is traditionally cited at 4,130 miles, but recent surveys suggest the Amazon may be longer.
largest lake in the worldThe Caspian Sea is the largest lake in the world by area — despite being called a "sea."
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