In the southern zone there are a lot of treasures to discover – Chirripó, the country’s highest peak with its paramo, cold climate and glacial lakes, is a challenge for hikers. The south has tropical forests on the Osa Peninsula with giant trees that shelter the richest fauna in the country. In the Golfo Dulce, a tropical fiord, unique in the word, is visited by whales and dolphins. The south holds vestiges of age-old cultures in the stone spheres on the Isla del Caño. Living indigenous cultures, like the Guaymi and Borucas hold on to their way of life and their traditions. The Península de Osa reaches out of south western Costa Rica into the Pacific Ocean. Its large virgin rainforests receive 4000 millimetres of precipitation a year. Due to incredible wealth of tropical flora and fauna, scientists urged the creation of a National Park to protect the Península, and in 1975, 108,000 acres in its western corner were declared Corcovado National Park.