Indian Grinding Rock State Recreation Area was created in 1968 and preserves the largest collection of bedrock mortars in North America. The park includes a regional Indian museum designed to reflect the architecture of the traditional roundhouse and a reconstructed Miwok village. Located at 14881 Pine Grove-Volcano Road,
Pine Grove or phone 209-296-7488.
One generally accessible campsite has a firm surface and accessible table. The tent site is 10’x10’ and allows stakes. Assistance may be required with fire rings or minor slope problems The restroom toilet permits front transfers and is generally accessible. Showers are usable but assistance may be required with reach to controls. The route from the campsite to the restrooms is paved and generally accessible.
North/Loop Trail Accessible Routes This over 1/2 mile long out and back trail begins at the main parking area near the amphitheater and ends at a seating area located near the junction of the North Trail and the Loop Trail. The trail includes a trestle bridge crossing Else Creek, views of the historic farm house and a hike through a forested environment.
Chaw’se Regional Indian Museum. The museum is generally accessible. Most of the exhibit areas are accessibly designed and located. Restrooms: The museum restrooms are on an accessible route to the lower floor on the exterior of the building and are usable.
Routes of travel: An accessible paved path leads from the museum and its restrooms to the picnic area and some of the exhibits, including the Bedrock Mortar and Petroglyphs, and toward the Ceremonial Roundhouse.
Bedrock Mortar and Petroglyphs. Visitors view the mortars and petroglyphs from an accessible wood observation deck a few feet above the rocks.
Ceremonial Roundhouse. The Roundhouse is located approximately 30 feet from the accessible trail, along a firm, dirt path with slopes up to 10%. The exhibit is normally viewed only through a barred door.