Song Long cave is surrounded by 99 legendary mountains in the territory of Khuon Ha commune (Lam Binh). It only takes about 3 hours to travel from Na Hang wharf to reach this extremely beautiful cave. The cave is about 200m high above the lake surface, more than 200m long, the average height in the cave is 40m, the widest place is over 50m. Exploring Song Long cave, visitors will go from one surprise to another. The first impression is the "heavenly stone stake" right in front of the cave, which people still call Vai Pha pile. Passing Vai Pha pole, visitors can completely walk freely to explore the whole magnificent beauty of this place.

The cave is divided by each partition. Each partition is like a sculpture gallery, in which each sculpture is a masterpiece of nature perfect in every detail. Those are tall stalactite columns that are meticulously carved, delicately creating strange shapes depending on the imagination of visitors. Some liken it to an upside-down chandelier that radiates different colors; Some people think that it looks like an ancient ginkgo tree with unique wood grains...

Song Long Cave attracts visitors not only by the shape of stalactites but also by its unique and strange colors. Natural light from the rock crevices shines into the cave, combined with stalactites to create shimmering and fanciful colors that attract visitors. In particular, the air in the cave is very fresh, cool and quiet, which is also a plus point that makes Song Long cave always crowded with visitors. So that anyone who has the opportunity to return to this attractive ecological lake area, Song Long cave is an option not to be missed.