Lagoa do Fogo (Lagoon of Fire) is a crater lake within the Água de Pau Massif stratovolcano in the center of the island of São Miguel in the Portuguese archipelago of the Azores. The governmental authorities do not allow any modern construction around this lake. This lake is the highest above sea level on São Miguel Island. Due to this, there is constantly changing weather, from sunshine to mist and cold. The lake has no inflow, its maintained directly from precipitation and from superficial run-off from the watersheds.