Introduction to the ruins of the Ninghe Ancient Plank Road: The ruins of the Ninghe Ancient Plank Road are located on the west bank of Longmen Gorge. On the cliff about 15 meters away from the river, there are countless neat and square stone holes arranged in sequence. These are the remains of the ancient Daning River plank road. The Ninghe Plank Road has a total length of more than 400 kilometers, which is longer than the famous Jiange Plank Road and is one of the few ancient plank road relics in my country.