Laguna Grande de Mojanda occupies the caldera of Mojanda volcano, one of the largest volcanoes of Ecuador's northern Interandean Depression. This view looks toward the rugged eastern rim of the caldera from the slopes of the post-caldera stratovolcano Fuya Fuya with Cerro Negro at the upper right. Laguna Grande de Mojanda is one of two lakes occupying a summit caldera cutting an older Mojanda edifice. Fuya Fuya volcano was constructed immediately to the west of Mojanda and produced two major rhyolitic plinian explosive eruptions.
Photo by Lee Siebert, 2006 (Smithsonian Institution).