La Sierra Heights, La Sierra Hills, and Norco Hills are informal names for the northernmost section of the range known as the

Temescal Mountains Temescal Mountains, also known as the Sierra Temescal (Spanish for " sweat lodge range"), are one of the northernmost mountain ranges of the Peninsular Ranges in western Riverside County, in Southern California in the United States. They extend ...

, located in northwestern Riverside County, California. The section begins on the south bank of the

Santa Ana River The Santa Ana River is the largest river entirely within Southern California in the United States. It rises in the San Bernardino Mountains and flows for most of its length through San Bernardino and Riverside Counties, before cutting through ...

and extends southward between the valleys occupied by the City of

Riverside Riverside may refer to: Places Australia * Riverside, Tasmania, a suburb of Launceston, Tasmania Canada * Riverside (electoral district), in the Yukon * Riverside, Calgary, a neighbourhood in Alberta * Riverside, Manitoba, a former rural m ...

to the east and the Cities of Norco and

Corona Corona (from the Latin for 'crown') most commonly refers to: * Stellar corona, the outer atmosphere of the Sun or another star * Corona (beer), a Mexican beer * Corona, informal term for the coronavirus SARS-CoV-2, which causes the COVID-19 di ...

to the west. A gap or portezuela connects these valleys and separates this range from Arlington Mountain and the balance of the range to the south. These heights vary in height between the informally named La Sierra Summit, just over 1500 feet, to the hill at Grape Benchmark at 1084 feet. Other summits include

Hole Benchmark A hole is an opening in or through a particular medium, usually a solid body. Holes occur through natural and artificial processes, and may be useful for various purposes, or may represent a problem needing to be addressed in many fields of en ...

, 1261 feet, Linn Benchmark, 1495 feet and the informally named Rattlesnake Peak, 1421 feet. Rattlesnake Norco California, United States
from peakbagger.com accessed November 21, 2013; 1421 feet,

References

Temescal Mountains Mountains of Riverside County, California Hills of California {{RiversideCountyCA-geo-stub