Introduction to the moat: The moat is rectangular like a Chinese character, 1,500 meters long from east to west, 1,350 meters long from north to south, with a total length of 5,700 meters and a river width of 190 meters. The outer bank of the river is surrounded by a low sandstone fence, leaving a 30-meter-wide open space on the inner bank. There are two embankments on the moat due west and east leading to the west and east gates of Angkor Wat. The east embankment is an earth embankment, and the west embankment is 200 meters long and 12 meters wide. It is paved with sandstone slabs. In ancient times, the west embankment was covered with gold.