Aysén Fjord is an ~70 km long fjord stretching east from a skerry-guarded (skjærgård) region called Moraleda Channel (Spanish: Canal Moraleda), which is a body of water separating the Chonos Archipelago from the mainland of Chile.
The West Wind Drift splits into the northward flowing branch which meets the Humboldt Current and the southward flowing Cape Horn Current, providing ample heat to drive vaporization of the sea water, which results in onshore precipitation of 4,000 – 7,000 mm per year in the Chilean Andes.
[3] The fjord was explored by Enrique Simpson in 1870 in the Chacabuco who discovering its usfullness to access more inland locations.
[4] From the 1990s up to August 2003 there were plans for building an aluminium smelter in the Puerto Chacabuco at the fjord's head.
[5] The project was opposed by salmon farm companies operating in the fjord for the water pollution they claimed the smelter would produce.