Excursion Day to Quilotoa Lagoon from Quito

The Quilotoa is a 3 km (2 mi) wide water-filled caldera formed by the collapse of this dacite volcano followed by an eruption of VEI-6 approximately 812 years ago, which produced a pyroclastic flow and lahars ( mud flows) that reached the Pacific Ocean, which deposited volcanic ash through the air along the northern Andes.