In a secluded, wild ravine leading from Hrušica to Hruščanaka planina seven waterfalls are hiding, however, only two are easily accessible. Channels, waterfalls and pools are strung like on a necklace. The prevailing dark grey limestone is decorated by calcite threads and the waterfall has the biggest collection petrified treasure of ancient seas in Slovenia. Petrified tunnels, made by sea worms, shells and snail shells bear witness that these rocks are about 240 million years old.