![Postojna Cave](https://a4.pbase.com/g4/66/660966/3/138898097.ZfcNNrVZ.jpg) Postojna Cave
by goelsamuel
| ![Gallery: Slovenia - Postojna Cave](https://a4.pbase.com/g12/48/619748/3/171260392.lR0lyZJ2.jpg) Gallery: Slovenia - Postojna Cave
by anhminh
| ![Postojna Caves, Slovenia](https://a4.pbase.com/g4/02/391802/3/144736354.SXEspY9J.jpg) Postojna Caves, Slovenia
by David Jenkins
| ![Postojna Cave_Slovenia](https://a4.pbase.com/g1/72/418872/3/128350750.651BVl2d.jpg) Postojna Cave Slovenia
by LOKE YK
| ![Postojna](https://a4.pbase.com/g12/93/329493/3/172078518.ZukLqSzd.jpg) Postojna
by Brian McMorrow
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![Karst Caves Postojna 2012](https://a4.pbase.com/g4/70/782370/3/144056571.Wydkq6xU.jpg) Karst Caves Postojna 2012
by Hugh Vincent
| ![Slovénie - Visite des grottes de Postojna en petit train électrique](https://a4.pbase.com/g12/09/515909/3/169539586.hDlJS173.jpg) Slovénie - Visite des grottes de Postojna en petit train électrique
by Patrick DEBETENCOURT
| ![Postojna Cave](https://a4.pbase.com/g9/75/35275/3/161655649.aTicPgUS.jpg) Postojna Cave
by KAI-WING LEUNG
| ![Postojna Caves](https://a4.pbase.com/g3/11/16011/3/54198486.IMG_1502.jpg) Postojna Caves
by Peiying Mo
| ![Western Balcans, Austria, Italy](https://a4.pbase.com/g12/67/392467/3/172517417.b9qq7kVB.jpg) Western Balcans, Austria, Italy
by Asteris Sardelis
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