As-preciously sole survived plants, horse chestnuts are attributed to the giant trees which were coexistent with dinosaur during Jurassic Period two hundred million years ago. On the verge of extinction, they are rare and could be found only in few places for its unfortunately suitable latitude. Cishuijingsha is the only natural resort in this province approved by tile State Council for the protection of horse chestnuts. With graceful peaks and ridges, old trees reaching to the skies, fright water falling down and red cliffs. It is an ideal place for ecological travel and scientific survey.