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溶洞,英文名称:karst cave,是喀斯特地貌最为典型的表现。岩溶和溶洞现象也是北京西山和房山世界地质公园的典型特点。房山世界地质公园的溶洞群房山世界地质公园的溶洞群是我国北方温带条件下干旱气候岩溶洞穴的典型代表。主要有三个溶洞群:以石花洞为代表的岩溶洞穴群,主要洞穴30余座,分布在大石河沿岸的中奥陶统马家沟组灰岩中;以仙栖洞为代表的岩溶洞穴群17座,沿拒马河分布在十渡及张坊镇;以云水洞为代表的岩溶洞穴群9座,分布在山前上方山一带。
Karst cave, English name: Karst cave, Karst topography is the most typical performance. Karst and cave phenomenon is also typical of Beijing Xishan and Fangshan World Geological Park. Fangshan World Geopark karst caves Fangshan World Geopark karst caves in northern China under arid climate typical karst caves. There are mainly three cave groups: Karst cave group represented by Shihuadong, more than 30 main caves distributed in the Middle Ordovician Majiagou Formation limestone along the Dashihe River; karst caves represented by the Xianqi Cave There are 17 karst cave groups along the Juma River in Shidu and Zhangfang Township. There are 9 karst caves represented by the Cloud Water Cave, which are distributed in the mountain area above the mountain.