The term Texas Plain is a geographical feature in the state of Texas. It is also known as the Llano Estacado, which is Spanish for 'staked plain'. The Llano Estacado is a large plateau that covers parts of Texas and New Mexico. It is characterized by its flat terrain and lack of vegetation. The Llano Estacado is an important part of the history and culture of Texas, and it is home to many species of wildlife.