Add Yahoo as a preferred source to see more of our stories on Google. An aerial view of the Crater Lake Caldera in Oregon. Obviously, visible lava spewing from a volcano’s caldera, like Hawai’i’s ...
Green Matters on MSN
NASA captures aerial view of lake within ancient El Salvador volcano that mysteriously changes color
Lake Coatepeque is a stunning blue body of water nestled within an ancient volcanic caldera in El Salvador.
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