cave

By Fabio Esteban Amador Explorers have discovered what might be the oldest evidence of humans in the Americas. Alex Alvarez, Franco Attolini, and Alberto (Beto) Nava are members of PET (Projecto Espeleológico de Tulum), an organization that specializes in the exploration and survey of...

Spain's Altamira cave, dubbed the "Sistine Chapel" of Paleolithic art because of the paintings of animals on its ceiling, will no longer reopen to the public as planned at the end of the year. The cave located some 30 kilometres (19 miles) west of the northern city of Santander has been closed...

Shelter is any thing that protects a person from his/her environment, including dangerous cold and heat and allow restful sleep, another human need. A shelter can range from a natural shelter; such as a cave or a fallen-down (cracked but not split) thickly-foliaged tree, to an intermediate form...