Located in Alxa League with an area of about 18 square kilometers, the still existing 4600 and more rock paintings can date back more than ten thousand years, contents of which include hunting, herding, the sun, the moon, stars, temples, dancing competition and amusement, vividly recording people’s production, life, cultural formation, natural environment, social style and features of the district in the remote antiquity worthy to be called the ancient art gallery in the North-western region of China.