Yulin Grottoes, commonly known as Thousand-Buddha Gap in Anxi County, 75 kilometers southwest of Yulin River (also known as pragmatic River), consists of the existing Tang, Five Dynasties, Song, Western Xia, Yuan dynasty, such as Cave 42, located in Yulin east of the river, on both the precipice, Dongya 31, West Cliff 11, 4,200 square meters murals, colorful 259. Due to natural and man-made reasons, the Yulin Grottoes colorful originals into obscurity now more colorful for future generations of repair or remodeling.