Monahans Sandhills State Park Wiki:The Monahans Sandhills are 70 miles long and 20 miles wide. The dunes are almost pure quartz granules. Wind directions change the shapes of the dunes, but their coordinates on the map remain the same from year to year. The Sandhills are not a desert; they are a part of a semi-arid ecosystem with groundwater but with relatively nutrient-poor windblown sand. Monahans Sandhills State Park is noted for dunes up to 70 feet tall. The Sandhills are mostly private property that the state of Texas manages under a 99-year lease. Opened to the public in 1957, the lease continues until 2056. Visitors to the park are invited to play local sports like sand-boarding, sand football, surfing, and tobogganing. https://en.wikipedia.org/wiki/Monahans_Sandhills_State_Park
Monahans Sandhills State Park Wiki:The Monahans Sandhills are 70 miles long and 20 miles wide. The dunes are almost pure quartz granules. Wind directions change the shapes of the dunes, but their coordinates on the map remain the same from year to year. The Sandhills are not a desert; they are a part of a semi-arid ecosystem with groundwater but with relatively nutrient-poor windblown sand. Monahans Sandhills State Park is noted for dunes up to 70 feet tall. The Sandhills are mostly private property that the state of Texas manages under a 99-year lease. Opened to the public in 1957, the lease continues until 2056. Visitors to the park are invited to play local sports like sand-boarding, sand football, surfing, and tobogganing. https://en.wikipedia.org/wiki/Monahans_Sandhills_State_Park