Tuyet Tinh Coc Ninh Binh, also known as Am Tien cave - The place where Queen Mother Duong Van Nga practiced in the last years of her life. The name Tuyet Tinh Coc is the name given by tourists when they see the charming scenery of green mountains and blue waters here. This tourist destination is located in Truong Yen commune, Hoa Lu district, Ninh Binh province, part of the Hoa Lu ancient capital relic complex, adjacent to the eastern citadel of the ancient Hoa Lu citadel, only 400m from King Dinh temple in the direction Trang An. With an altitude of 500m above sea level, the climate here is mild and cool all year round. Completely separate from the hustle and bustle of other crowded attractions, An Tiem Cave gives visitors the feeling of being lost in a fairyland on earth.