query: instance_of blue hole 
supports: Llano Estacado ((meaning Palisaded Plain) Texas/local pronunciation: [yano estakaðo], New Mexico/local pronunciation: [jano estakaðo]) commonly known as the Staked Plain, is a region in the Southwestern United States that encompasses parts of eastern New Mexico and northwestern Texas. One of the largest mesas or tablelands on the North American continent, the elevation rises from in the southeast to over in the northwest, sloping almost uniformly at about . Santa Rosa is a city in and the county seat of Guadalupe County, New Mexico, United States. The population was 2,848 at the 2010 census. It lies between Albuquerque and Tucumcari, situated on the Pecos River at the intersection of Interstate 40, U.S. Route 54, and U.S. Route 84. The city is located west of, but not within, the Llano Estacado or "staked plains" of eastern New Mexico and west Texas. A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is used in the United States, Canada, Romania, China and Taiwan. In the United Kingdom and Ireland, county towns have a similar function. New Mexico is a state located in the southwestern region of the United States of America. It was admitted to the union as the 47th state on January 6, 1912. It is usually considered one of the Mountain States. New Mexico is fifth by area, the 36th-most populous, and the sixth-least densely populated of the 50 United States. Texas is the second largest state in the United States by both area and population. Geographically located in the south central part of the country, Texas shares borders with the U.S. states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the southwest, while the Gulf of Mexico is to the southeast. Underwater diving is the practice of descending below the water's surface to conduct underwater activities. In ambient pressure diving, the diver is exposed to the pressure of the surrounding water, and uses breathing apparatus for scuba diving or surface supplied diving, or when freediving, will breath-hold. The saturation diving technique reduces the risk of decompression sickness after long duration deep dives. Atmospheric diving suits may be used to isolate the diver from the effects of high ambient pressure. Although not usually considered to be diving, crewed submersibles can extend depth range, while remotely controlled or robotic diving machines can reduce the risk to human divers. The Pecos River is a river that originates in eastern New Mexico and flows into Texas, emptying into the Rio Grande. Its headwaters are on the eastern slope of the Sangre de Cristo mountain range in Mora County north of Pecos, NM, at an elevation of over 12,000 feet (3,700 m) feet. The river flows for 926 miles (1,490 km) before reaching the Rio Grande near Del Rio. Its drainage basin encompasses about 44,300 square miles (115,000 km). Underwater refers to the region below the surface of water where the water exists in a natural feature (called a body of water) such as an ocean, sea, lake, pond, or river. U.S. Route 54 (US 54) is an eastwest United States highway that runs northeast-southwest for 1,197 miles (1,926 km) from western Illinois to El Paso, Texas. It enters and leaves Texas twice. The Union Pacific Railroad's Tucumcari Line (former Southern Pacific and Rock Island Lines "Golden State Route") runs parallel to US-54 from El Paso to Pratt, Kansas, which comprises about two-thirds of the route. A city is a large and permanent human settlement. Although there is no agreement on how a city is distinguished from a town in general English language meanings, many cities have a particular administrative, legal, or historical status based on local law. A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common censuses include agriculture, business, and traffic censuses. The United Nations defines the essential features of population and housing censuses as "individual enumeration, universality within a defined territory, simultaneity and defined periodicity", and recommends that population censuses be taken at least every 10 years. United Nations recommendations also cover census topics to be collected, official definitions, classifications and other useful information to co-ordinate international practice. U.S. Route 84 (US 84) is an eastwest U.S. Highway. It started as a short GeorgiaAlabama route in the original 1926 scheme, but by 1941 it had been extended all the way to Colorado. The highway's eastern terminus is a short distance east of Midway, Georgia, at an interchange with Interstate 95. The road continues toward the nearby Atlantic Ocean as a county road. Its western terminus is in Pagosa Springs, Colorado, at an intersection with U.S. 160. Interstate 40 (I-40) is a major east-west Interstate Highway running through the south-central portion of the United States generally north of Interstate 10 and Interstate 20 but south of Interstate 70. The western end is at Interstate 15 in Barstow, California; its eastern end is at a concurrency of U.S. Route 117 and North Carolina Highway 132 in Wilmington, North Carolina. It is the third longest interstate in the United States, behind Interstate 80 and Interstate 90. Much of the western part of I-40, from Oklahoma City to Barstow, parallels or overlays the historic U.S. Route 66, east of Oklahoma City the route generally parallels U.S. Route 64 and U.S. Route 70. I-40 runs through many major cities including Raleigh, North Carolina; Nashville, Tennessee; Memphis, Tennessee; Little Rock, Arkansas; Oklahoma City, Oklahoma; Amarillo, Texas, and Albuquerque, New Mexico. Scuba diving is a mode of underwater diving in which the scuba diver uses a self-contained underwater breathing apparatus (scuba) which is completely independent of surface supply, to breathe underwater. Scuba provides the diver with the advantages of mobility and horizontal range far beyond the reach of an umbilical hose attached to surface-supplied diving equipment (SSDE).
  Scuba divers engaged in armed forces covert operations may be referred to as frogmen, combat divers or attack swimmers. The Blue Hole of Santa Rosa is a circular , bell - shaped pool east of Santa Rosa , New Mexico that is one of the most popular dive destinations in the US for SCUBA diving and training . The Blue Hole is an artesian well that was once used as a fish hatchery . It is a clear blue body of water with a constant 64 ° F ( 18 ° C ) temperature and constant inflow of 3000 gallons per minute . While the surface is only 80 feet ( 24 m ) in diameter , it expands to a diameter of 130 feet ( 40 m ) at the bottom . Since Santa Rosa , New Mexico is at an elevation of 4,616 feet , it is necessary for divers to use high - altitude dive tables to compute the dive profile and decompression stops when diving in the Blue Hole . A diving permit is required to use the pool and can be obtained from the city of Santa Rosa ( $ 8 for a one - week permit ) . Tanks may be filled or rented as well as some equipment at a private dive shop located at the site .
candidates: 12 agreement agriculture area body of water census city civil parish continent county county seat del distance diving elevation equipment feature government gulf highway human human settlement intersection island lake law may mode mountain official part plain pond procedure range region river rosa route running seat settlement square state status surface term territory union water will
answer: lake