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到过南斯拉夫的旅游者,无不赞叹斯洛文尼亚境内波斯托依纳山洞的瑰丽景色。它是世界上最大、最著名的山洞之一,每年吸引着60多万国内外游客。波斯托依纳山洞位于南斯拉夫与意大利交界处的喀斯特高原。自然地理学中的喀斯特——岩溶地貌,便由这个高原得名,因为这里的岩溶地貌发育得比较典型。而波斯托依纳山洞又是喀斯特高原中的著名岩溶。它位于高原的比弗卡河谷最低地,由比弗卡河的潜流对该地石灰岩地层天长日久的侵蚀而成。宏伟的山洞体系包括四个洞,全长21公里,洞与洞之间有隧道相通。
Visitors to Yugoslavia admire the magnificent view of the Postostina Caves in Slovenia. It is one of the largest and most famous caves in the world and attracts more than 600,000 domestic and foreign tourists each year. Postostina caves are located on the Karst plateau at the junction of Yugoslavia and Italy. The karst-karst landform in natural geography is named after the plateau because the karst landforms developed here are typical. Postostina caves are also famous karsts in the karst plateau. It lies at the lowest point of the Beaver Valley in the plateau, eroded by the long-lasting erosion of the limestone formations in the area by the underflow of the Beaver Creek. The magnificent cave system consists of four holes with a total length of 21 kilometers and tunnels between the holes.