& microwave antenna stations. Guard stations are still visible throughout the park. After the NIKE Missile Base was decommissioned, the Stanford Research Institute (SRI) occupied the base and area, and used the marshlands as facilities for Advanced Sonar Research, harboring many marine mammals, including dolphins. A firing range and aquifer exist on the southernmost hills. When SRI finished its mission in the mid-1960s, the site was dedicated for public use and turned over to EBRPD as manager in 1967. Activities Programs at the main shellmound site allow visitors to see a reconstructed tule house, shade shelter, pit house, and sweat lodge. Hiking is the principal activity. Several named trails are involved in making a loop around the park. A trail leads from the Visitor Center across the main road to a boardwalk that crosses the Main Marsh. At the end of the boardwalk, Muskrat Trail continues to the DUST (Demonstration Urban Stormwater Treatment) Trail, where the hiker can turn left onto Lizard Rock Trail, where he/she can see the chert outcroppings of the Coyote Hills, with the North Marsh visible on the right. Turn left onto the Bayview Trai, then go uphill on the Nike Trail, which crosses the saddle of the hills and leads to the paved portion of Bayview Trail. This follows the shoreline, affording a view of the salt marshes and birds feeding on the water. Turn left at Soaproot Trail to go back uphill, and left again at Quail Trail to return to the Visitor Center. The Alameda Creek Trail runs from San Francisco Bay to the mouth of Niles Canyon. It forms the northern border of Coyote Hills park, and is really two trails in parallel: an equestrian trail on the northern levee and a bicycle trail on the southern levee. Tours, open houses and school programs are offered at the Tuibun Ohlone Village site. The site includes an Ohlone-style family house, sweat house, and shade shelter. Reservations are required, and must be made in advance by calling (510) 544-3220. There two picnic areas, one at the Visitor Center, the other at the Quarry Staging Area. Both are non-reservable. Each has picnic tables, barbeque braziers, water, and shade. Hoot Hollow has a reservable group picnic area. Group camping is available at the Dairy Glen campsite. This 50-person group camp is available with reservations. The site has picnic tables, a campfire ring, braziers, water, shade, and