Surface textures and profile characteristics are varied. Soil reaction is generally alkaline. Due to the diversity of soils and elevations, many vegetation types exist in the region. Although most of Texas is located on flat plains or rolling plains, there are substantial mountains in the Trans-Pecos region or far West Texas. The highest point in the state is Guadalupe Peak at 8,749 feet above sea level.
Sea level is the lowest elevation in Texas and can be found in all coastal counties.
Elevation naturally rises from east to west and south to north. Big-toothed maple Mtn.