The Caves of Drach were already known in the Middle Ages and were explored in 1880 by M.F. Will and in 1896 by E.A. Martel, who discovered the cave where the lake that bears his name is located.

Between 1922 and 1935 the cave was adapted to allow visits by opening a new entrance, outlining routes and stairs…but above all, by introducing the electricity grid designed by the engineer Sr. Buigas.

The visit takes about 1 hour and covers distance of about 1.200m and includes a concert of classical music and a boat tour across the Martel lake. The temperature inside is about 21° and the humidity is about 80%.