Image via National Geographic.
Licancabur is a symmetrical stratovolcano located at the border between Chile and Bolivia. Stratovolcanoes are conical volcanoes built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash. Interestingly enough, two thirds of the volcanoes are in Bolivia, while the higher third of the northeastern slope, the crater and summit, belong to Chile. There have been no major eruptions in the past 500–1,000 years.
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