Rock Mary, Rock formation in Caddo County, Oklahoma, United States
Rock Mary rises sixty feet high with a two-hundred-foot diameter, featuring two tower-like projections of red sandstone topped with Weatherford dolomite.
Captain Randolph Marcy's expedition first documented this formation in 1849, naming it after Mary Conway who traveled with California-bound emigrants.
The Oklahoma Historical Society placed markers at Rock Mary to document its importance in the state's early transportation routes and indigenous heritage.
The formation stands on private property approximately five miles south of Interstate 40, accessible through County Road E1060 near Hinton.
Heinrich Balduin Möllhausen created detailed drawings of Rock Mary in 1853, providing the earliest visual documentation of this geological formation.
Location: Oklahoma
GPS coordinates: 35.45972,-98.42556
Latest update: March 3, 2025 15:54
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