Quilotoa is a water-filled caldera and the most
western volcano in the Ecuadorian Andes. The 3 kilometres 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. The caldera has since accumulated a 250 m
deep crater lake, which has a greenish color as a result of dissolved minerals.
Fumaroles are found on the lake floor and hot
springs occur on the eastern
flank of the volcano. Quilotoa is a tourist site of growing popularity.
Images of Quilotoa crater Lake
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