Grotto Hills
| Grotto Hills | |
|---|---|
|   Grotto Hills Location of the Grotto Hills in California[1]   Grotto Hills Grotto Hills (the United States) | |
| Highest point | |
| Elevation | 1,494 m (4,902 ft) | 
| Geography | |
| Country | United States | 
| State | California | 
| Region | Mojave Desert | 
| District | San Bernardino County | 
| Range coordinates | W35°9′36.7″N 115°12′55.8″W / 35.160194°N 115.215500°W | 
| Topo map | USGS Grotto Hills | 
Grotto Hills is a summit in the Lanfair Valley of San Bernardino County, California. Its tallest peak is at 4,895 feet / 1,492 meters. It is in the east-central part of Mojave National Preserve, 7 miles north of Hackberry Mountain.