The main features of Mallorca’s relief are two mountain chains, almost parallel to one another. The bigger of the two is the Serra de Tramuntana, whose highest point, at 1,447 metres, is Puig Major de Son Torrella.
The predominant landforms in the 1.000 km2 occupied by the Serra de Tramuntana are those related to karstic formations. To be specific, in its North Eastern half, from Sóller to Cap de Formentor, karren fields (limestone pavement) and karstic depressions characterize the whole landscape, creating almost impassable spots, rugged and beautiful.
There is an abundance of subterranean caverns, such as the cave formation at Campanet, with numerous potholes known in Catalan as avencs.
An interesting hydrogeological feature is Ses Fonts Ufanes, a Vauclusian spring located at the southern foot of the range, very close to the Campanet Caves. Following abundant rainfall, this spring has a peak flow rate of 30 m3 per second for a few days at a time, characteristic of an aquifer with a small storage capacity and a rapid response to rainfall.