Quilotoa

Pujilí Canton, Ecuador

Quilotoa is a water-filled crater lake and the most western volcano in the Ecuadorian Andes. The 3-kilometre-wide caldera was formed by the collapse of this dacite volcano following a catastrophic VEI-6 eruption about 800 years ago, which produced pyroclastic flows and lahars that reached the Pacific Ocean, and spread an airborne deposit of volcanic ash throughout the northern Andes.

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