龙山 道教名山。位于山西省太原市西南二十公里处。龙山为吕梁山支脉；山上林密叶茂，花草旺盛，深秋时节红叶满山，景色宜人。峰顶原有道教造像两窟，为元初道士宋德方发现，于是宋德方于元代太宗六年（ 1234 ）在此主持开凿石窟五洞，并建昊天观，后又有人增开一窟，现道观已毁，石窟洞存，今人根据各窟供奉和雕像不同，分别称为虚皇龛、三清龛、卧如龛、三天法师龛、三皇龛、玄真龛、披云子龛、七真龛；各龛雕像数额不等，八窟共计七十八尊，大都保存完好，雕工朴实，衣着庄重，线条简练，别具风格；石窟顶上还雕有龙凤等图案，两侧及前壁之上留有元代题记，为研究道教石窟艺术和历史的珍贵实物资料，属道教重要文物，山西省文物保护单位。 2 、理想天界中的山名。《上清元始变化宝真上经》：“龙山，乃九天之根纽，万气之渊府，在天西北之角，周回四十万里，高与玉清连界，东南则通阳之霞，上承清宫神虎之门；西北则交寒亢之野，上通金阙神仙之庭；南则极于太丹浮梨之乡，气协洞阳之光；北则指于勾陈交关华盖，气践广灵；中央直冲玉京八达交凤山。

Longshan 1, a famous Taoist mountain. It is located 20 kilometers southwest of Taiyuan City, Shanxi Province. Longshan is a branch of the Luliang Mountains; the mountain is densely forested with lush foliage and flowers, and in late autumn the mountains are covered with red leaves, making for a pleasant scene. There were originally two caves with Taoist statues on the summit. They were discovered by Taoist monk Song Defang in the early Yuan Dynasty. In the sixth year of the reign of Emperor Taizong (1234), Song Defang presided over the excavation of five caves in the caves and built the Haotian Temple. Later, someone added a cave. The Taoist temple has now been destroyed, but the caves still exist. People now call them the Hall of the Empty Emperor, the Hall of the Three Pristine Ones, the Hall of the Reclining Buddha, the Hall of the Three Heavenly Masters, the Hall of the Three Emperors, the Hall of the Sage, the Hall of the Cloud-Covered Child, and the Hall of the Seven Sages. There are 78 statues in the eight caves, most of which are well preserved. The carvings are simple, the clothing is solemn, the lines are concise, and the style is unique. The top of the grottoes is also carved with patterns of dragons and phoenixes. There are inscriptions on the sides and on the front wall from the Yuan Dynasty. They are precious physical materials for studying the art and history of Taoist grottoes and are important cultural relics of Taoism. They are also protected cultural relics in Shanxi Province. 2. The names of the mountains in the ideal realm of heaven. The Shangqing Yuan Shi Hua Bian Bao Zhen Shang Jing: “Longshan is the root of the nine heavens, the source of all energy, in the northwest corner of the sky, 400,000 li in circumference, high and connected to the jade clear, southeast to the sun's mist, the upper bear the Qing Palace God tiger's door; northwest the field of the cold and the high, and the court of the immortals in the Golden Palace; to the south, it reaches the land of the great Dan and the floating pear, where the light of the Dongyang shines; to the north, it points to the Guocheng crossroads and the Huagai, where the spirit of the Guangling is; in the center, it reaches the Yujing Bada crossroads and Fengshan.