A tunnel (dashed green line) between the former lead mine in Cave del Predil (sl. Rabelj) in Italy and Log pod Mangartom in Slovenia. Also known as "Štoln" in Slovene or "Galleria di Bretto" in Italian. The tunnel's primary function was draining of water from the mine, it was also used for transportation of miners and during WW1 for transportation of soldiers and goods.
Based on a map from OpenStreetMap (http://www.openstreetmap.org/?lat=46.4225&amp;lon=13.5835&amp;zoom=13&amp;layers=B000FTFT)
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