Murrieta Rocks originally named Las Tinajas,, refers to the waterholes to be found eroded into the Vaqueros Sandstone on top of the outcrop. The location is at a large outcrop of Vaqueros Sandstone, called Murrieta Rocks, about a mile northeast of Brushy Peak just within the southern bounds of the Rancho Cañada de los Vaqueros in California. From the east, the outcrop overlooks a spring in an eastern tributary arroyo to the upper Kellogg Creek that flows down from Brushy Peak.