This Park preserves a major underground river cave system. For a portion of its length, the Artlish River flows completely within the Artlish River Cave leaving no ow at the surface making it the largest active river cave system currently known in Canada. The remote park features two large cave entrances and an underground river within an old growth forest environment. This area was proposed for protection by the local community for many years before becoming established as a park in 1996. The Park includes undisturbed surface karst features and a total of 20 caves. It also contains old-growth valley bottom with coastal western hemlock and western red cedar as the dominant tree species. It also provides winter habitat and a migration corridor for Roosevelt elk.

This park is very difficult to access and there are no developed facilities. Please be advised that access to Artlish Caves Provincial Park is very difficult as a result of road deactivation activities outside of park boundaries. Approaching from the west, by way of Atluck Lake, a bridge has been removed on East Artlish Main approximately 50m from the Artlish Main logging Road and visitors must now walk several kilometres on overgrown former logging roads to the park boundary and caves beyond. Trails receive limited maintenance and are difficult to access; please exercise caution. Deactivated logging roads into the park, approached from the east from the Zebellos Mainline, are also overgrown and difficult to follow.