The trail is an easy walk for all ages that takes you through a self-guided tour with 24 points of interest about native plants and wildlife. The site was constructed and is maintained by volunteers from the Rim of the World Interpretive Association. A donation is requested for those keeping the Arboretum trail guide. This paved nature trail begins at the entrance of the National Children's Forest off Keller peak Road. The trail is specifically designed and maintained to accommodate the needs of the visually and physically disabled.
All interpretive signs are in distinctive print and braille.
This trail begins immediately east of Rock Camp station on Highway 173. The trail leads to bedrock mortars used by the Serrano Indians to grind acorns and to make flour. The Serrano came to this area each spring because of the plentiful acorn crop and the mild weather. Bedrock mortars were formed by the grinding action of mono and pestel stones. It was much easier to use these large bedrock slabs rather than carry a mortar stone with them, but they also did that in areas where such stones did not exist.