The site contains an important set of dinosaur footprints from the Upper Jurassic (155 million years ago).

There is also an incomplete track with predominance of handprints of sauropods from the upper Jurassic, the first of its kind in Portugal.

[1] The tracks are preserved on a surface that about 155 million years ago was the muddy bottom of the shore of a coastal lagoon, likely fresh water.

The same geological processes that led to the lifting and tilting of the layers with these footprints were also responsible for raising Serra da Arrábida.

[1][2][3] The discovery of the footprints occurred in the 1980s, while a compact limestone extraction took place.