Introduction to the scenic spot landmark stone: Located on the right side of the road at the entrance to the scenic spot, it is a natural rock, oval, yellow, 2 meters in diameter, and weighs 10 tons. On the front of the rock is the inscription "Jiguan Cave" by the famous Chinese poet Wang Guozhen, and on the back is the inscription "The First Cave in the North" by Mu Qing, the former president of Xinhua News Agency.