Located in wanghai Temple township yonghe pass near the bank of the Yellow River on the cliff. In June 1936, the red xv corps covered the retreat of the main force of the 6th company of the 241st regiment of the 81st Division, and the remaining 12 warriors were trapped in the high mountains by enemy forces several times larger than their own. After days of fierce fighting, 12 Red Army soldiers, out of ammunition and food, climbed a rock cliff and drowned themselves in a river.