Pegadas de Dinossáurios da Serra de Aire Natural Monument
Pegadas de Dinossáurios da Serra de Aire Natural Monument is a natural monument in the Serras de Aire e Candeeiros Natural Park, Portugal, known for its sauropod tracks. It has the single longest known sauropod track in the world (147 m (482 ft) long). It is part of the Calcários Micríticos formation.
It has around 20 different trails, all of which are part of a large limestone slab preserved for over 175 million years.
The area was originally a quarry, the Pedreira do Galinha.
On July 2, 1994, Ricardo Matos da Silva, João Pedro Falcão and João Carvalho, discovered the footprints that would turn the quarry into the current monument.