This place is cool if you are interested in Geology or ancient humans. However the caves are small with not much to see apart from spiders and a few bats and some writing on the walls.The location is currently closed with no signs of opening soon, the only way to get in Is to climb over the wall and walk along a trash filled wall until you find the main path.The karst limestone mountainside and caves are very cool though.

I yearn for traces of human beings who lived in Labidong 10,000 years ago, the legend of the beautiful deer turning around in Li people, the frustration of the demoted officials in Yazhou ancient city, the long-cherished wish of the world for the women's clothes of Huangdao, the perseverance of Jianzhen and the prosperity of the Silk Road on the sea for a while... There is a temporary entrance on the south side of the wall, which is unattended. Within the wall, shrubs and weeds are overgrown one meter high, and along the small radial direction of the mountain peak which the predecessors have stepped out, they can find a hidden limestone karst cave. This is where the remains of Sanya people are unearthed. The ancient trees are towering outside the cave, the shade is covered by the sun, the birdsong mountain is quiet, and there seems to be immortal atmosphere around it, maybe 10,000. Years have not changed. In the middle of the cave, there were two pendulums, which were like giant pens hanging in the air. It is said that touching the water dripping down the pillars with your hands will make you think like a spring of water and create flowers with wonderful brushwork. But this magic pen was badly damaged during the Cultural Revolution, and now only remnants remain. In the green forests, flowers and grass cover, ape cry cliffs, cicadas, bees and butterflies busy Yinling, scarce human tracks, but numerous melting holes of various sizes, strange shapes.

落笔洞风景区内绿林遮空，花草盖地，鸟鸣山林，猿啼峭壁，蝉噪蝶忙，其间大小石灰岩熔洞数不胜数

It's worth visiting. It's not big, but its fame is OK. After all, it's the earliest human origin in Sanya. Labidong Cultural Heritage.

Luobi Cave, Sanluo Village, Business School intersection, very strange place, nature's ghosts and magical work has created this beautiful and magical scenic spot