Cueva de los Verdes
At the foot of the Corona volcano, the island's subsoil is riddled with underground galleries. Upon contact with the air, the surface of the lava streams cools and hardens into a dense layer of basalt, underneath which molten magma continues to circulate. The Cueva de los Verdes galleries, said to be 5 000 years old, run for 7km to the coast. A beautifully illuminated 2km-network of these tunnels runs along various levels.
Phone:+34 928 84 84 84
10am-6pm (7pm in summer); last tour 1hr before closing