Map of Cerjanska pecina surroundings
|Ponor Provalije is the swallow hole of Provalija stream
and the entrance to Cerjanska pecina, at 515 m a.s.l. Tracing
experiments confirmed its connection with Kravljansko vrelo spring at
310 m a.s.l. The pothole Jama iznad Kravljanskog vrela is located near
the cave galleries, and probably connected with them.
The pit Cerjanska propast is the swallow hole of a nearby stream, and it was believed that it drains towards Cerjanska pecina. Therefore, a system of connecting galleries was expected to be found. However, the geological survey indicates that this is not possible, because Cerjanska propast lies beyond a fault and a lithological barrier. It is almost certain that its waters are drained norhtwards along the fault zone to Vrelo Dragovac spring. Numerous small springs in the first 2 km of the main gallery of Cerjanska pecina are most probably drained from a small aquifer in sandstones and shales which form the core of the syncline which comprises the cave.
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