 The site of the incident, eight miles (13 km) northeast of Eagle Pass, became known as Deadman's Hill.The El Camino Real, later known as the Old San Antonio Road, that crosses the Rio Grande, begins in East Texas and crosses southern Maverick County.The trail was originally blazed by Alonso De León in 1690, and is said to have been traversed by more early Spanish explorers and settlers than any other section of the state.