The funerary monuments on the east side are traditionally called "kings' tombs," although only one inscription can be read today. It is located over the northernmost niche (left, in this photo) and is thought to refer to King Anak Wunshu, r. 1050 - 1077 AD. The monuments are truly impressive in scale, averaging about 7m (23ft) in height. Spouts at their base (right side of photo) directed water down from the upper terrace to a lower pool, while the central staircase gave access to the niches for devotional purposes.