In the area called Escullos we find the largest fossilized dune in the Natural Park, other samples of this type of geological formation can be seen on the beaches of Genoveses and Playazo de Rodalquilar. The formation of this fossil of oolitic sand is curious, was formed in the quaternary era, more than 100 thousand years ago, when the Mediterranean Sea covered the entire surface of the Natural Park, oolites are small spherical particles that are formed by aggregation of calcium carbonate in concentric layers around a core formed by a grain of sand on the seabed of the warm seas at shallow depth. Then the sea, due to a climate change that raised the temperatures, moved back to its current limits, exposing the great fossilized dune. Then the erosion of the wind, the rain and the waves of the sea have done the rest, sculpting these capricious shapes by the sea.
Built in the 18th century by order of Carlos III, the San Felipe Castle rises, as part of the defensive battery spread throughout the coast, from Garrucha (Almería) to Manilva (Málaga), with the aim of avoiding pirate attacks and of possible enemies. The castle housed four defensive cannons, the space previously occupied by them, a kind of round balcony offers one of the best views of the park's coastline..
Attached to the dune there is a tourist complex with restaurant, bar and a campsite. There is also a nightclub, Chaman Beach Club, where some nights you can enjoy live music or the performance of some DJ. In summer a Haima is installed that performs the functions of summer discotheque offering music, drinks and nocturnal leisure. The houses of the zone of the Escullos do not form, as it were, a homogeneous urban nucleus, because they are dispersed by all the plain before arriving at the sea. The nearby towns are San José on one side and the Isleta del Moro on the other.
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