Crestline Group Campground is a convenient place for large families, church groups and other social gatherings of up to 50 people. The facility is a popular recreation site for visitors going to the Palomar Observatory, a world-class center of astronomical research by the California Institute of Technology in north San Diego County. Hiking, biking and picnicking are available nearby. Fire restrictions may be in effect; campers should call the Ranger District for the latest information Contact campground or Palomar Observatory for schedule of summer special events Click here to learn more about Cleveland National Forest Be sure to check current area fire restrictions prior to visiting this, or any campground. Conditions frequently exist which prohibit the use of wood and charcoal fires. Please contact the Palomar Ranger District at (760) 788-0250 or visit here for updated information. Don't Move Firewood: Protect California's forests from tree-killing pests by buying your firewood locally and burning it on-site. For more information visit firewood.ca.gov.