The 16,000 acres of Pinnacles National Monument are filled with precipitous bluffs, spires, and crags of colorful volcanic rock, which have been further contoured over a period of many millenia by the forces of wind, rain, heat and cold. The entrance to the monument is 35 miles south of Hollister . It is strictly a hiking park, although it is possible to view some formations from a car.
Hiking trails vary from simple one-mile jaunts to challenging hikes of more than seven miles.
In addition to the geological features, the monument has an abundant bird population as well as deer and wildflowers. The plants and animals with the monument are examples of a chapparal ecosystem. Picnic facilities are available. Pets must be kept under physical control. Admission is charged per vehicle.