Natural Reserve:

El Calafate, Santa Cruz Province
Area: 16.000 hectares

The Félix de Azara Natural History Foundation has declared the "estancia 25 de Mayo" as a Private Natural Reserve. In this Estancia there are places that are geologically and paleontologically unique in Argentina, among them there is one of the biggest fossilized crab's deposits; a reef made of fossilized oysters and other formations that contain fossilized mammals remains, dating 15 millionyears old.

Dr. Silvio Casadío