The Reka (literally, 'river' in
Slovene), also the Inner Carniola Reka (
Slovene: Notranjska Reka),[2][3] is a
river that starts as Big Creek (
Croatian: Vela voda) in
Croatia, on the southern side of Mount
Snežnik, and flows through western
Slovenia, where it is also initially known as Big Creek (Velika voda).[4] The river is 54 km (34 mi) long, of which 51 km (32 mi) is in Slovenia.[1] At the village of Škocjan it disappears underground through
Škocjan Caves, flowing 38 km (24 mi) underneath the Slovenian
Karst. The river continues as part of the
Timavo in Italy. Tracer studies have shown that it also feeds springs elsewhere on the Adriatic Coast between
Trieste and
Monfalcone.[5] It has a
pluvial regime.[6]
The Reka (solid)-Timavo (dashed) River System of the Yugoslavian and Italian Karst. Settlements: