Eastern New Mexico is a physiographic subregion within the U.S. state of New Mexico. The region is sometimes called the "High Plains" or even "Little Texas". The region is largely coterminous with the portion of the Llano Estacado in New Mexico. Eastern New Mexico mostly lies upon the high plains, which extends to altitudes over . The region is mostly characterized by flat featureless terrain with the exception of the Pecos River valley and the abrupt breaks along the Mescalero Ridge and northern caprock escarpments of the Llano Estacado. The region typically lacks the high relief of central and northern New Mexico, such as that in the Sangre de Cristo and Sandia mountain ranges.