Maintained by the regional Tualatin Hills Park and Recreation District, the natural area has 3.5 miles (5.6 km) of hiking trails.

Portland area voters approved a bond measure in 1995 that provided funding for the purchase of greenspaces by Metro.

[3][4][6] The mountain, contrary to popular belief, is not a former volcano, but was formed due to basalt flows in the Tualatin Valley.

[3] The 231 acres (93 ha) natural area is surrounded by agricultural lands to the south and urban development on the north.

[3][4] Birds at the park include the red-tailed hawk, great horned owl, bald eagle, western bluebird, several sparrow species, and the olive-sided flycatcher.