Because the child wanted to see the volcano, I found that this is the closest and well-preserved volcanic group to Beijing, and the scenic spot is free. I drove to the Ulanhada Geological Museum from Beijing and saw the volcanoes No. 3, No. 4, No. 5, and No. 6. I don't know where No. 1 and No. 2. The map of No. 3 volcano is the North Pleaning Furnace of Ulanhada Geopark. The volcanic morphology is still well preserved, but it can be found at the foot of the mountain. In fact, it has been dug a large piece. It can be seen that there are many red rock layers in the volcanic rock. It should be iron oxide, which has obviously been mined. The parking lot below is surrounded by local villagers to charge, a car ten yuan, the so-called invoice or its self-printed parking coupon. Volcano No. 4 is a mountain with the Ulanhada Geopark logo, and it is also obviously mined. The rock formation structure is very obvious. The red rock formation and the black rock formation are alternately distinct. Many tourists take pictures here. Volcano No. 5 is the most well-preserved one. There is a protected sign at the foot of the mountain. There is no road or development on the mountain. There are tourists climbing around. It is not very good to climb. The east side is slow because of the slope. There are more people on the upper side. The southwest slope is full of sheep. During the Anti-Japanese War, The Mongolian anti-Japanese army once hidden the war horses in this crater, hiding from the Japanese aircraft's investigation, is a volcano that has also been credited with the victory of the war; Volcano No. 6 is the most heavily mined volcano, driving around the mountain for a week, full of exposed volcanic stones. According to this calculation, maybe the No. 1 and No. 2 volcano was early... When I came today, the wind was very strong and the mountain climbing was very difficult. In fact, I can choose to come over in summer and the climate will be more suitable. However, this time to see the volcano, to meet the wishes of the children, during the eleventh period, there are not many people, it is not worth the trip.