What is "mustang ridge"

Population (2000): 785
Housing Units (2000): 274
Land area (2000): 3.793489 sq. miles (9.825090 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 3.793489 sq. miles (9.825090 sq. km)
FIPS code: 50200
Located within: Texas (TX), FIPS 48
Location: 30.048123 N, 97.690583 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords: