Introduction to Natural Lake Hill: Natural Lake Hill is a sand hill about 90 kilometers long and 1 kilometer wide sandwiched between Xiaoxingkai Lake and Daxingkai Lake. There is a dense virgin forest on the lake hill. There are red pine, oak, birch, oak and other trees in the forest. Red deer, mink, fox, pheasant, wild boar, weasel and other animals can be seen in it, adding a little vitality to the quiet forest. .