All information should be verified for accuracy before traveling.
Additional information may be obtained from The National Park Service, Office of Information, P. O. Box 37127, Washington, D.C. 20013-7127. Call: 202-208-4747.
General: Pre-Columbian Indians dug these quarries for agatized dolomite for the making of knives, scrapers, and other tools. Guides tours by appointment only.
Amistad National Recreation Area
General: Amistad Reservoir on the Rio Grande River offer water sports and boating.
General: This memorial commemorates the 1963 signing of the Chamizal Treaty that peacefully ended a boundary dispute between the United States and Mexico.
General: Stretching along the Gulf Coast for some 80 miles, this barrier island has excellent fishing, sandy beaches and plentiful marine and bird life.