The slag cave at the foot of Gele Mountain in Chongqing City shocked the Chinese and foreign massacres. Traffic to the dregs cave is very convenient, you can take the Bai Mansion - dregs Cave - Geleshan Martyrs Cemetery ferry, you can also take the No. 210 bus to come. Slag Cave used to be a small coal kiln, named for its large amount of slag and small amount of coal. Later, it became famous for the Holocaust and became a red educational attraction. Because "Hongyan" "Jiangjie" and came here specially, after going to feel very deep, the soul was shocked. No tickets are allowed to open the dregs cave free of charge. The opening time is from 8 a.m. to 6 p.m. Every holiday here is a hot spot for visitors, so many people can not see the road ahead, so we must avoid the peak of the tour and travel in the off-season. I came here on the eleventh day of the year. It was difficult for me to walk at any pace. Then I went to Wednesday. There were so few people that I could visit them as much as I could. It was a real difference between heaven and earth.