natural monument of fossil dinosaur footprints in serra d `aire in pedreira do galinha, in portugal. a pedagogical circuit was cre

aire animal background can circuit conservation created dino dinosaur earth footprint footprints fossil galinha ground history important jurassic land large learn limestone millions monument more mud natural nature old outdoor pangea park pattern pedagogical pedreira period portugal prints quadruped rails record rock rough sauropode sediment see serra site slab soil stone texture textured touch vegetation visitors was where years