sentences:  Elevations along the bottom of the canyon range from to above sea level.The canyon drains to the west, into a large dry wash known as Tijeras Arroyo, which runs through Kirtland Air Force Base, passes just south of the Albuquerque International Airport, and then joins the Rio Grande.The arroyo heads at the historically important pass (approximately ), and this pass and the entire canyon are traversed by Interstate 40, following the path of historic U.S. Route 66.