SAN ANTONIO – Before cars and highways, people followed El Camino Real de los Tejas to travel between Mexico, Texas and Louisiana. That trail played a key part in making San Antonio the city it is today. The trail system starts around Laredo and near Eagle Pass, goes up through San Antonio and into eastern Texas into Louisiana. The importance of this trail system is why El Camino Real de los Tejas National Historic Trail Association was created to help preserve and mark it. Related:‘Hispanics have an incredible history that hasn’t been told’: San Antonio businessman creates website about Tejano history