Xochicalco - Underground Passages and Chambers

(Local Name: Subterráneos) Proceeding westwards from the Pyramid of the Feathered Serpents to Hill A and from there down the northern slope, the visitor will come to the underground passages and chambers (Subterráneos) to the left of the entrance. From a large hall a wide flight of steps leads across three ledges to a passageway. Another path leading from the entrance hall ends in a higher room (19 m (62 ft) long, 12 m (39 ft) wide and 3.50 m (115 ft) high), in which there are three square columns (4 3 2 m (13 3 7 ft)). In the corner there is an air shaft which was probably used for astronomical observations. At the time of the solstice on June 21st the sun shines down the shaft and illuminates the chamber. In