Cala en Baster is situated at two kms from Sant Ferran de ses Roques, between the northcoast of Fomentera, es Racó des Cans and Platja de Tramuntana. In this natural setting nudism is allowed. This u-shaped sea inlet is quite small and it is surrounded by high, steep, rocky and abrupt cliffs with no vegetation, and it is located in the interior of the long bay of Tramuntana, surrounded by the Punta Prima and de sa Creu, which include also Racó des Forat, es Picatxo, es Quintalar, es Quintalaret, Punta des Martinets, Penyal d’en Jaume, Punta Llarga, es Pujol des Vi, ses Platgets, Caló de Sant Agustí, es Racó de sa Pujada and Punta de sa Palmera. The marine and underwater conditions for anchoring boats are excellent. This bay is open to the wind from the northwest-north-northeast-east. You can anchor at one and a half hectometres from the coast on a sandy and rocky ground and the depth ranges from five to seven metres. On the other side, Cala en Baster has a sheltered coastal track in the inside of this bay, but the marine characteristic explain that only small boats with little draught can anchor here. In this inlet there is a depth of 10 metres, which reduces very quickly when the navigator approaches the coast. You have also to keep an eye on the sandbank on both sides of the entrance.