Monahans Sandhills

Monahans Sandhills SP https://tpwd.texas.gov/state-parks/monahans-sandhills https://en.wikipedia.org/wiki/Monahans_Sandhills_State_Park The Monahans Sandhills State Park is located in the southern Llano Estacado in Ward County and Winkler County, Texas. The closest major town is Monahans, Texas, and the closest limited-access highway ingress is Exit 86 on Interstate 20. The park is noted for the presence of sand dunes up to 70 feet (21 m) high. Although desert-like, the Monahans Sandhills are not a desert; they are a part of a semi-arid ecosystem (average annual rainfall 12.3 inches (310 mm)) characterized by the presence of both groundwater and relatively nutrient-poor windblown sand. The Shinoak (Quercus havardii) is a local climax shrub, an unusual type of oak tree which because of local conditions often achieves full growth of only 4 feet (1.2 m) in height. Most of a Shinoak's biomass exists in the form of a lengthy root system reaching down to groundwater. If a Monahans sand dune has become stabilized and has stopped blowing about in the wind, that is often because a small grove of Shinoaks have stabilized the dune with their extensive root systems.