Steen's Buttes, mounds south of the city, were first reported by army explorers in the 1840s. The easternmost mound is "Rock Mary," an important landmark along the California Road, used by gold-seeking '49ers. Hydro was named for the good water in the area.
Hydro, OK Landmarks18 Holes. ...
This downtown memorial honors oil industry giant, Earl P. Halliburton, founder of Halliburton Services, an international oil ...