Organ Rock Formation Organ Rock Formation The Organ Rock Formation or Organ Rock Shale is a formation within the late Pennsylvanian to early Permian Cutler Group and is deposited across southeastern Utah, northwestern New Mexico, and northeastern Arizona. This formation notably outcrops around Canyonlands National Park, Natural Bridges National Monument, and Monument Valley. The age of the Organ Rock is constrained to the latter half of the Cisuralian Epoch by age dates from overlying and underlying formations. Important early terrestrial vertebrate fossils have been recovered from this formation in northern Arizona, southern Utah, and northern New Mexico. These include the iconic Permian terrestrial
Washington-on-the-Brazos, Texas virtually abandoned. The State of Texas purchased of the old townsite in 1916 and built a replica of the building where the delegates met. The state acquired more of the site in 1976 and 1996. Located between Brenham and Navasota off State Highway 105, the site is now known as Washington-on-the-Brazos State Historic Site. It covers , and features three main attractions: Independence Hall, Barrington Living History Farm, and the Star of the Republic Museum, which is administered by Blinn College. The site's visitor center is free and includes interactive exhibits about the Texas Revolution and the park's attractions, a