Spy Rock is a pink granite dome located in the Llano Uplift in Mason County, Texas, rising 1,749 feet (533 m) feet above sea level.

[1] As with Enchanted Rock, Spy Rock is formed of middle Precambrian (1,082 ± 6 million years ago)[2] material.

The base of the peak can be reached by the public, but the dome itself is on private property and accessible only with property owner's permission.

[3][4] Federal and state statutes, regulations and rules governing trespassing, archeological sites and historic sites apply.

[5] The state Game Warden as a commissioned peace officer is authorized to inspect natural resources and take necessary action for the preservation of the resources.