Lost Lake   Be the first to submit input for Lost Lake. If you have info on Lost Lake, Santa Rosa Mountains, San Diego County, California please submit it here to improve this web site.          These outdoors activities are available near Lost Lake.   Public Lands Near Lost Lake: Palomar Mountain State Park, California, 15 miles away Cuyamaca Rancho State Park, California, 20 miles away San Pasqual Battlefield State Park, California, 26 miles away Cabrillo National Monument, San Diego - CA, 49 miles away Joshua Tree National Park, Twentynine Palms - CA, 68 miles away   Camp Grounds Near Lost Lake: Lake Henshaw Campgrounds, Santa Ysabel, 5 miles away   Hotels Near Lost Lake: Riviera Oaks Resort and Racquet Club, Ramona, 16 miles away San Diego Country Estates, Ramona, 16 miles away San Vicente Golf Resort, Ramona, 17 miles away Harrahs Rincon Casino & Resort, Valley Center, 18 miles away Stanlunds Resort Inn And Suites, Borrego Springs, 23 miles away   Hiking Trails Near Lost Lake: Aguanga Trail, San Diego County, 14 miles away        5.2 hiking miles, 1624 feet elevation difference Pacific Crest Trail - section 3, overlapping County, 15 miles away       56.8 hiking miles, 3921 feet elevation difference Gomez Trail, San Diego County, 18 miles away        11 hiking miles, 4309 feet elevation difference   Ski Areas Near Lost Lake: Bear Mountain, California, 56 miles away       1665 foot drop, 12 lifts, 34 runs Snow Summit, California, 57 miles away       1200 foot drop, 14 lifts, 31 runs Snow Valley, California, 60 miles away       1041 foot drop, 11 lifts, 30 runs