It was mainly created because it is a representative sample in a good condition of patagonic coastal biodiversity and preserves fields with paleontological value.
The inferior valley of Chubut River is a fertile area located in the northeast of the province of Chubut and it´s crossed by the homonymous river. Bahía Bustamante/ Bustamante Bay is the only algae town in the world.
Undoubtedly, the park´s the major attraction is the San Rafael Lagoon. The park, which is the biggest in the Aysén region, has 1.742.00 hectares of which 400.000 hectares are age-old ices and fields over the vegetation limit and is the biggest in the Aysén region.