Menglianggu National Forest Park, formerly the Menglianggu Forest Farm, was officially approved for establishment by the Ministry of Forestry in September 1992. Covering 12,000 mu, it spans multiple townships including Sunzu, Andi, Daizhuang and Shuanghou. Its southwestern boundary follows mountain ridges, adjacent to Zhongsi Forest Farm of Mengyin County. Rolling mountain ranges stretch across the park, with major peaks including Da’an Top (the main summit), Dagu Top, Eagle’s Nest, Louzi Peak, Menglianggu, Mengyin Summit and Wanquan Mountain.
The mountains are densely covered with Japanese black pine, Korean pine, black locust, Chinese arborvitae, alder, as well as moso bamboo, Chinese chestnut, apple and other fruit trees. The park features serene woods, blooming flowers, gurgling clear springs, fresh air, and numerous exotic rock formations and caves.
A deep cave lies in Xiangshan Valley east of Da’an Top, named the Water Cave for its perennial flowing streams. A natural stone gate forms the cave entrance. Roughly fifty to sixty meters inside stand stone tables and stone stools; ancient stone carvings once lined the cave walls, yet their inscriptions have faded beyond recognition. Proceeding another twenty meters inward, visitors see a massive fifty-meter-tall flat boulder resembling an immortal’s dwelling.
Other scenic spots include the Flagpole Hollow, Sword-Testing Stone, Horse-Racing Ridge and Horse-Tethering Stone. Legend has it that General Meng Liang of the Song Dynasty stationed troops here, hence the mountain’s name.
The Sword-Testing Stone stands roadside a short distance west of Horse-Racing Ridge. Over three meters tall, it rises imposingly with a vertical crack split cleanly from top to bottom, said to be cut by Meng Liang testing his treasured sword.
Horse-Racing Ridge is a gentle mountain saddle between Dagu Top and Menglianggu Peak, where Meng Liang once exercised his warhorses. Today it has been paved into a wide thoroughfare linking Menglianggu and Dagu Top.
Climbing northeast toward Menglianggu, visitors pass jagged precipices and green pines that delight the eye. A cluster of grotesque rocks halfway up the slope marks the legendary horse-tethering spot of Meng Liang. Near the summit of Menglianggu lies a cave spacious enough to shelter horses, running north-south and curving eastward. Named the Horse-Tethering Cave, it served as Meng Liang’s stable in ancient tales. A short ascent past the cave leads to the very summit of Menglianggu, crowned with massive scattered rocks dotted with natural stone hollows known locally as Flagpole Hollows.