The Laguna Mountains are a section of the Peninsular Ranges in eastern San Diego County. The mountains run in a northwest/southeast alignment for approximately 20 miles. They are bordered by the Cuyamaca area on the west and the Sonoran Desert on the east, where the mountains form a steep escarpment along the Laguna Salada Fault. To the north the Laguna Mountains are bounded by the Elsinore Fault and to the south by Cameron Valley and Thing Valley. The highest point is Cuyapaipe Mountain at 6,378 feet. The mountains are largely contained within the Cleveland National Forest. Mount Laguna is a village in the Laguna Mountains with a population of about 80.
In a broader sense (according to the The Columbia Gazetteer of North America [1] (http://www.bartleby.com/69/16/L00916.html)), the Laguna Mountains extend northwest about 35 mi from the Mexican border at the Sierra de Juárez range. In this sense they would encompass the In Ko Pah Mountains and Jucumba Mountains to the southeast and Cuyamaca Mountain to the west.
The mountains have long been inhabited by the Kumeyaay people.
The Laguna Fire, previously known as the Kitchen Creek Fire and the Boulder Oaks Fire, was, at its time, the largest fire in the history of California.
It was started by downed power lines during Santa Ana winds in the Kitchen Creek area of the LagunaMountains in eastern San Diego County on the morning of September 26, 1970.
The Laguna Fire was surpassed as the largest fire in California history by the 280,278 acre (1,134 km²) Cedar Fire in October 2003.
The Peninsular Ranges are a group of mountain ranges which stretch 1500 km (900 miles) from southern California in the United States to the southern tip of Mexico 's Baja California peninsula ; they are part of the North American Coast Ranges that run along the Pacific coast from Alaska to Mexico.
The Peninsular Ranges include the Santa Ana Mountains, San Jacinto Mountains and LagunaMountains of southern California with the Sierra Juarez, Sierra San Pedro Mártir, and La Giganta mountains of Baja California.
The southern end of the Baja Peninsula, including the Sierra de la Laguna, was formerly an island, and evolved in relative isolation from the northern part of the peninsula.