• Breathtaking autumn colors in Bering Land Bridge National
Preserve      Bering Land Bridge National Preserve      National
Preserve Alaska  Lakes and Ponds  Aerial view of the conjoined
Devil Mountain Maar Lakes in the summertime The Devil Mountain
Maar Lakes are the largest on the planet. NPS Photo A maar is a
broad, low-relief volcanic crater that was formed by a
phreatomagmatic eruption, which is an explosion caused by
groundwater coming into contact with hot lava or magma. The
maars of Bering Land Bridge National Preserve are unique in
their size and location. Devil Mountain Maar (17,500 years old),
North Killeak Maar (>50,000 years old), South Killeak Maar
(>40,000 years old) and Whitefish Maar (100,000-200,000 years
old) are the four largest maar lakes in the world. They are also
at the northernmost point of where maar lakes can be found in
the world. Maars usually fill with water to form a shallow
crater lake. Aerial view of theround edge of the Northern
Killeak Maar on the summer tundra  Aerial view