Cova Submarina del Baluard

We enter swimming through the main mouth (A), the most comfortable one, and at 8 metres we duck our heads to position ourselves under a dome 2.5 metres high, where we can already touch the ground with our feet and find a fork of fully submerged galleries. The gallery located further to the W forces us to advance almost 5 metres on a breath-hold until reaching a 3-metre-high shaft, where we stand to rest. Further on the gallery ceiling rises progressively and allows us to take air. After about 7 more metres we reach the Caleta del Relax, with a floor full of rounded pebbles and a small 1.5-metre-high shaft. Gallery E forces a long breath-hold covering about 12 metres underwater, until the ceiling begins to rise forming small domes. At 4 metres from the beginning of the gallery, a conduit in a sharp turn to the right communicates with the outside through the other entrance of the cave. Continuing along gallery (E) and heading N, after a couple more small dives we reach the last metres of the gallery, more comfortable to traverse, where la Platgeta awaits us, also with a floor covered in pebbles and a small 1.5-metre-high shaft. A few metres before reaching the exit we find the narrowest passage of the entire cavity (0.50x0.50 m).

The shallow water depth oscillates between 1 metre and a little over 1 metre. The cave can change its physiognomy due to strong storms: the last 5 - 6 metres of both galleries could become totally inaccessible due to the accumulation of sand.

The return can be made by exiting through the mouth (E), since the direction of the gallery allows it more comfortably. Just in front of the large rock that blocks the way, we can take air again and after another 5-metre breath-hold we can exit to the outside either to the left or to the right of the large stone. This is a cavity where the greatest possible precautions must be taken, and only enter it when the state of the sea allows it, that is, when the sea is totally calm.

As a curiosity it should be noted that la Platgeta would be located just below the Arxiu Històric Municipal of Sitges, and the Caleta del Relax would be a few metres away right under the Ajuntament itself.