Escullaventura – climbing, hiking, canyoning, mountain bike in Mallorca

First GR in Mallorca.  This route was designed to allow people go along the Serra de Tramuntana from one end to the other.
The name “Piedra Seca” is due to the many constructions along the Serra de Tramuntana that are built from stone, without using mortar.  All along the way we shall see spectacular terraces, huts and coal-mines that seem lost in the middle of the forest or situated at high altitudes. We will see not only the houses of these lost civilisations but also the lime-kilns, mine sources and snow houses. Our guides will explain how they were an important part of life and culture, that has made the mountains a world heritage site. 

http://www.escullaventura.com/docs/GR221_en_1201.pdf