The sand dunes in Es Trenc develop through a 500 metres wide line along the coast. This area is between the beach and Es Salobrar salt lagoon -the most extensive humid area in Mallorca, after Alcúdia´s Albufera. It has got an extension of 330 hectares -even though is smaller than it used to be- and salt is still extracted.
Es Trenc beach, 3000 metres long, symbolises the ecologst fight which mobilised thousands of people who did not want it to be urbanised and to preserve this unique site in its natural state.In 1984 the Parliament of the Balearic Islands declared this site as a Special Interest Natural Area. To get there the road PM-604 from Campos to Colònia de Sant Jordi must be taken. About 6 km away from Campos there is a road on the right, from which large amounts of salt can be seen, and it leads to a payment parking next to the beach. At the furthest side of the beach there use to be naturist bathers. As far as facilities are concerned, there is an open-air bar where food and drinks are served. There are also deckchairs and umbrellas for rent.
Es Pregons Grans is an unspoilt beach which is 150 m long and 25 m wide. It has fine white sands that extend for hundreds of metres out to sea. It is only possible get here by foot, by walking south for about 15 minutes along the coast from the beach of Es Trenc. Another possibility is to walk north for a few minutes along the coast from the beach of Es Marquès in Colònia de Sant Jordi.
Es Pregons Petits is an unspoilt beach which is 90 m long and 15 m wide. It is located next to its bigger sister – Es Pregons Grans.