Within the Aysén Region, the Chonos Archipelago, named for an extinct people, is laced with innumerable islands around which blue whales thrive. Both the Darwin and Moraleda channels traverse the archipelago, which extends down to the 17,420-square-kilometer (6,726-square-mile) Laguna San Rafael National Park in the Northern Patagonian Ice Field. The San Rafael Glacier and a 16-kilometer-long (10-mile-long) fjord are found within the park that is part of a UNESCO Biosphere Reserve.
