Recently, Chrysler Corporation released a series of advertisements that were filmed around these peaks. The black shales were deposited in a euxinic back-arc basin that developed in the early stages of the Andean Orogeny in southern Chile. Guanacos, the wild llama species, abound in the national park. They are usually skittish and run at the first sight of humans but in the park they are remarkably tame and approachable on foot. The guanaco was the main source of food for the native population that once inhabited the Patagonian interior.
Rheas abound in Patagonia.
It is not uncommon to see hundreds of them in a single day. They are communal birds who care for each other's young. Frequently, up to two dozen chicks are seen following a single pair of adults. Two large sounds, Seno Skyring and Seno Otway were gouged out by glaciers descending from the Andes to the west. They were explored by Captain Fitzroy and the H. M. S. Beagle on the voyage that preceded the epic journey of discovery on which Charles Darwin was the ship's naturalist.