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November 2nd, 2026
Daily puzzle · Easy · Standard map
Theme: Crater Lakes Formed by Collapsed Volcanoes
Each of these lakes fills a caldera left behind after a volcano collapsed or blew its summit apart. Crater Lake formed after Mount Mazama's eruption roughly 7,700 years ago, while Lake Toba marks the site of one of the largest eruptions in Earth's history. Lake Kivu and Lake Nyos both sit in volcanic basins along the East African Rift, and Laguna de Apoyo fills a much smaller caldera in Nicaragua. Together they show how violent volcanic collapse can leave behind some of the world's most striking bodies of water.
1
Crater Lake, OregonThis deep blue lake in Oregon fills the caldera of the collapsed Mount Mazama.
2
Lake Toba, IndonesiaLake Toba in Sumatra occupies the caldera of a supervolcanic eruption from about 74,000 years ago.
3
Lake Kivu, RwandaLake Kivu lies in the East African Rift Valley between Rwanda and the Democratic Republic of the Congo.
4
Lake Nyos, CameroonLake Nyos is a crater lake in Cameroon that sits above a pool of magma.
5
Laguna de Apoyo, NicaraguaLaguna de Apoyo is a crater lake formed around 23,000 years ago near Granada, Nicaragua.