
While the park is one of the more remote in the national park system, Corcovado provides excellent wildlife viewing opportunities.
Corcovado boasts all four monkey species of Costa Rica (squirrel, white-faced, howler, and spider), many endangered large cat species and other mammals, birds, and a host of exotic frog, fungi, and insect species. Corcovado has such an impressive biodiversity partly because it encompasses many different microclimates and types of terrain, but mostly because it is isolated from heavy human impact.
Travel to and through the park is perilous and is best accomplished during the dry season.
All roads on the Osa Peninsula exhibit the disrepair characteristic of Costa Rica outside of the main tourist destinations. The road from Puerto Jimenez to Carate require a 4WD vehicle as it is a gravel road with several required river fordings. It recommended that this drive should only be attempted during the dry season. Note that Carate is next to the beach. Take care not to pass Carate as it is poorly marked. Parking is available by paying the store/bus stop which is Carate.
There are several short trails in and around Sirena