Hueco Tanks is an area of low mountains and historic site in El Paso County, Texas, in the United States. It is located in a high-altitude desert basin between the Franklin Mountains to the west and the Hueco Mountains to the east. Hueco is a Spanish word meaning hollows and refers to the many water-holding depressions in the boulders and rock faces throughout the region. Due to the unique concentration of historic artifacts, plants and wildlife, the site is under protection of Texas law; it is a crime to remove, alter, or destroy them. The historic site is located approximately 32 miles (51 km) northeast of central El Paso, Texas, accessible via El Paso's Montana Avenue (U.S. Route 62/U.S. Route 180), by turning at RM 2775. The park consists of three syenite (a weak form of granite) mountains; it is in area and is popular for recreation such as birdwatching and bouldering. It is culturally and spiritually significant to many Native Americans. This significance is partially manifested in the pictographs (rock paintings) that can be found throughout the region, many of which are thousands of years old. Designation Hueco Tanks State Park & Historic Site was obtained from the county by special deed on June 12, 1969, and by purchase of 121 additional acres on August 10, 1970. This site was opened to the public in May 1970. This 860.3-acre park is named for the large natural rock basins or "huecos" that have furnished a supply of trapped rainwater to dwellers and travelers in this arid region of west Texas for millennia. History The park has gone through considerable changes during private and public ownership. The inscribed names of Texas Rangers and US Cavalrymen, as well as Native American artifacts and paintings, attest to its historic nature. This site had originally attracted people due to its critical resource needed to survive life in the desert-water. The huge rocks and boulders have cracks and are pocketed with holes-huecos that trap and hold rainwater for months at a time. Passing people found this out and had made it known for future travelers by encrypting the walls with pictures and symbols on the rocks. Early inhabitants Human habitation of the area dates back 10,000 years with the arrival of the Desert Archaic Culture. These people would have eaten mesquite beans, banana yucca and cactus fruits in Hueco Tanks. The region was inhabited by