Friedrich Wilderness Park lies at the southern end of the Texas Hill Country. The park is hilly due to its location on the Balcones escarpment that separates the Texas Hill Country from the flat South Texas region.
Two endangered birds, the Golden-cheeked Warbler and the Black-capped Vireo, spend summers in the park.
The park is in the transition zone between the flat South Texas region and the Texas Hill Country. The parking lot is at 1,140 feet (350 m) elevation above sea level and 500 feet (150 m) above the San Antonio River in Downtown San Antonio.The highest hill in the park is 285 feet (87 m) higher (1425 feet above sea level). The skyscrapers of Downtown San Antonio can be seen from the highest points in the park.