Crater lakes appear when a caldera, a cauldron-like crater formed by the collapse of land following a volcanic eruption, becomes filled with water. Featured above are some of the most stunning, naturally formed crater lakes around the world.
Crater Lake (Okama), Mount Zao, Honshu, Japan
Kelimutu Crater Lake, Flores Island, Indonesia
Crater Lake, Mount Ruapehu, New Zealand
Crater Lake, Mount Pinabuto, Luzon, Philippines
Quilotoa Crater Lake, Ecuador
Vulcan Point within Crater Lake, Taal Volcano, Luzon, Philippines