Access from:

- Sesimbra by N379 heading to Espichel Cape, in Zambujal you will find a directional sign which indicates that you should go right.

The site is 350 meters away, and you can park your vehicle. Follow a small walkway until you get to the slab where you can see the famous trails of a quadruped dinosaur!

GPS: 38.453983, -9.123317

The ichnofossil deposit of the Avelino quarry, located in Zambujal, Sesimbra, constitutes an important palaeontological occurrence. It is a set of five tracks of sauropod footprints found on a currently deactivated quarry. The slab, dated from the Upper Jurassic, preserves five sauropod tracks that survived 150 million years of intense transformations. The footprints present on these tracks belong to the Parabrontopodus type. The large Upper Jurassic sauropod tracks, attributed to a Brontopodus, are the most common in Portugal but the five straight tracks on this deposit suggest the presence of a different group of these quadruped herbivore dinosaurs during the Upper Jurassic period in Portugal.

This site is classified as a Natural Monument.

Dinosaur – from the word dinosauria, created by a scientist to designate a group of organisms that today only exist fossils. Dinosaur comes from the Greek "deinós" meaning "astonishing, terrible, dangerous, hideous" e "saûro" meaning "lizard".

Ichnofossil or ichnite – from the Greek iknos meaning trace. In fact, it is a fossil trace of organisms’ activity that existed in the past (footprints, travel tracks, droppings, eggs and fossilized teeth marks are examples of ichnites).

Jurassic - geological period in which the dinosaurs dominated and the development of vegetation was abundant. It lasted about 54 million years, roughly between 208 to 144 million years ago.

Sauropods – herbivores dinosaurs with long necks and tails, relatively small skulls and brains, and limbs resembling those of the elephants.