The pool of Gibeon (2:13) was probably a huge round cistern cut into limestone rock. Since the water was about 80 feet (24 m) below ground, nearly 30 feet (9 m) of stairs were carved into the side of the shaft. These stairs led to a tunnel about 40 feet (12 m) long. At the end of this tunnel was the pool, where a person could draw water for daily use.