Lago de Coatepeque Caldera is a crater lake in the Central American nation of El Salvador. It's part of the volcanic Coatepeque Caldera in Santa Ana, the northernmost of the country's 14 departments (states). The lake covers about 26 square km (around 10 square mi.) and is one of the country's larger lakes. It's believed that the caldera was formed between 57k-72k years ago - a blink of the eye in geological terms. You can check out the natural wonder from above in this drone video by fotovideorestudiosv.