The San Antonio–El Paso Road, also known as the Lower Emigrant Road or Military Road, was an economically important trade route between the Texas cities of San Antonio and El Paso between 1849 and 1882. Mail, freight, and passengers traveled by horse and wagon along this road across the Edwards Plateau and dangerous Trans-Pecos region of West Texas. The "" originated at Austin and skirted the north of the Edwards Plateau. It intersected the Lower Road near Comanche Springs west of Horsehead Crossing of the Pecos River.