Teopan

Coatepeque Caldera aka Coatepeque Lake (Lago De Coatepeque)
Aerial view of Lago Coatepeque
Highest point
Elevation	746 m (2,448 ft)
Coordinates	13°52′N 89°33′W / 13.87°N 89.55°W / 13.87; -89.55
Geography
Location	El Salvador
Geology
Mountain type	Caldera
Last eruption	Unknown

Lago de Coatepeque
Coordinates	13°52′N 89°33′W / 13.87°N 89.55°W / 13.87; -89.55Coordinates: 13°52′N 89°33′W / 13.87°N 89.55°W / 13.87; -89.55
Type	crater lake
Basin countries	El Salvador
Surface area	26 km²
Islands	Teopan

Coatepeque De Coatepeque (Nahuatl cōātepēc, "at the snake hill") is a volcanic caldera in El Salvador in Central America. The caldera was formed during a series of major rhyolitic explosive eruptions between about 72,000 and 57,000 years ago. Since then, basaltic cinder cones and lava flows formed near the west edge of the caldera, and six rhyodacitic lava domes have formed. The youngest dome, Cerro Pacho, formed after 8000 BC.

Lake Coatepeque (Lago de Coatepeque) is a large crater lake in the east part of the Coatepeque Caldera. It is in Coatepeque municipality, Santa Ana, El Salvador. There are hot springs near the lake margins. At 26 square kilometres (10 sq mi), it is one of the largest lakes in El Salvador. In the lake is the island of Teopan, which was a Mayan site of some importance.