The lagoon, known as El Charco de los Clicos, which fills the base of this semicircular crater, is a result of flooding, and its green colour is from the algae that inhabit its waters contrasting with a black sand beach and weird looking rock formations make for quite a spectacular site.
The volcano made of porous lava ash has through the action of time given rise to spectacular formations.
This lake has been declared a natural reserve which prohibits bathing.
El Golfo can be reached by heading towards Yaiza and then following signs to the village of El Golfo. In this village lying on a marvellous bay near the Timanfaya National Park is worth checking out for its restaurants facing the sea.