Montanas del Fuego
The "fire mountains" of Lanzarote were created during a large eruptive phase near the village of Timanfaya lasting from 1730 to 1736 at Lanzarote. Huge oceans of lava swept the island, changing its nature completely. Today, at the Parque National de Timanfaya, the Montanes del Fuego being its center, one can witness the result of these eruptions.
Due to these events, Lanzarote is a UNESCO Biosphere Reserve.