The old Montenegro crater is undoubtedly the biggest highlight of the entire scenic spot. The scale is much larger than the crater in Haikou. Unfortunately, the slope is too steep and the bottom of the pit is not below. There is a plank road outside the top, which can circle the crater for a week. The panoramic view from various angles is very spectacular. In addition, this is the highest point of the five Dalian pools, and the best viewing platform to enjoy the five pools.