The marine and fluvial formation preserves several dinosaur trackways and has been declared a Natural Sanctuary (Spanish: Santuario de la Naturaleza) in 2004.

[1] The formation comprises a sequence of rhythmically alternating shales and red sandstones with a minimum thickness of 1,100 metres (3,600 ft).

Paleocurrent analysis demonstrated a flow direction towards the west, northwest and west-northwest.

The speed of the dinosaurs leaving the tracks is estimated at 4 to 7 kilometres per hour (2.5 to 4.3 mph).

[6] Additionally, in the Jurassic part of the formation, fossil flora was reported, containing fossils of Posidonomya, Perisphinctes,[7] Baiera sp., Brachyphyllum sp., Cladophlebis sp., Dictyophyllum sp., Equisetites sp., Nilsonia sp., Pterophyllum sp., Ptilophyllum sp., Taeniopteris sp., and Filicales.