Rock Art at Helan Shan

Helan Mountain, or Helan Shan is an natural barrier extending for 250km from north to south, which divides Inner Mongolia and Ningxia. The west slopes of Helan Shan are gentle and smooth, connecting Alashan Plateau while the east slopes are rugged and steep, overlooking at Yinchuan Plain. On the over-30 passes in the east slopes…