Vrhnika is a town in Slovenia. It is the seat of the Municipality of Vrhnika. It is located on the Ljubljanica River, 21 km from Ljubljana along the A1 motorway.GeographyVrhnika lies at the southwest end of the Ljubljana Marsh near the sources of the Ljubljanica River, where the Ljubljana Basin opens up between the foot of Ljubljana Peak (Ljubljanski vrh, 819m) and Ulovka Hill (801m). The territory of the town extends south onto the Logatec Plateau (Logaška planota), where the Big and Little Drnovica Collapse Sinkholes (Velika Drnovica, Mala Drnovica) are found. A rich network of springs and streams originates and joins near the town to form the source of the Ljubljanica.NameThe settlement at the location of today's Vrhnika was attested in antiquity as Nauportus in Latin, and as Ναύποντος and Νάμπορτος in Greek. Medieval attestations of the name include de superiory Laybaco in 1300, Oberlaybach in 1308 (and Ober Laybach in 1309), and Vernich in 1481, corresponding to the modern Slovene name. In the past, the town was known as Oberlaibach in standard German. The Slovene name is probably a compound of vrh 'top, summit' + nika or nikve 'creek, spring', referring to the source of the Ljubljanica River. The Latin name Nauportus is a compound of navis 'boat' + portus 'transfer', referring to a place where cargo had to be transferred from boats to pack animals or carts along a trade route. A mythological reinterpretation of the Latin name as referring to the portage of a boat itself (specifically, the Argo) appears in Pliny the Elder's Natural History.