A volcanic crater lake is a lake in a crater that was formed by explosive activity or a collapse during a volcanic eruption.
The crater lake of Mount Rinjani, Indonesia
Landsat image of Lake Toba, Indonesia, the largest volcanic crater lake in the world
Nevado Ojos del Salado is a dormant complex volcano in the Andes on the Argentina–Chile border. It is the highest volcano on Earth and the highest peak in Chile. The upper reaches of Ojos del Salado consist of several overlapping lava domes, lava flows and volcanic craters, with sparse ice cover. The complex extends over an area of 70–160 square kilometres (27–62 sq mi) and its highest summit reaches an altitude of 6,893 metres (22,615 ft) above sea level. Numerous other volcanoes rise around Ojos del Salado.
Volcanic Landscapes of the Central Andes. Shown are Nevado Ojos del Salado, Cerro El Cóndor and Peinado, along the Argentina-Chile border. Astronaut photo from International Space Station, 2010.
Penitente field at an altitude of approximately 6500 m on northern face of Ojos del Salado in summer of 2020