Between Izgornik and the village of Mala Sela lies a deep sinkhole with its natural source of water. It was walled in the time of the Celts.
Eighteen stairs lead to the source.
There is a giant arch above the source. People of Mala Sela, foresters,
shepherds and passers-by used the water from this source. The source is
not in a very good condition because of weather and noone to take care
of it. A part of the arch collapsed into the source.