Located in Porto Cristo, the Drach caves were one of the first tourist attractions in the east of Mallorca. In the late 19th century, Archduke Ludwig Salvator of Austria commissioned the French speleologist Martel to explore the caverns, and he discovered the lake that now bears his name, Lake Martel, measuring over one hundred metres in length by thirty in width. During the trip visitors can see the wonderful lighting of this space, the work of the engineer Carles Buigas, known as the “light wizard”, and a quartet of musicians on board a boat perform a classical music concert.