Just 7 km from village of Skrad there are two magical natural protected areas: Vražji prolaz (Devill's Passage) and Zeleni vir (Green whirlpool).
Due to its special beauty and geological value, the area was declared a special geomorphological reserve in 1962 with an area of 200 ha. In addition to its natural values, the first hydroelectric power plant in this area „Munjara“ was bulit in 1921.
VRAŽJI PROLAZ (THE DEVIL'S PASSAGE), one of the most beautiful canyons in Gorski kotar mountain area, about 800 meters long, in some parts only 2 meters wide, is the result of action of water that has “eaten” the stone for thousands of years and made an unusual path. The creek Jasle flows through the canyon, which is also the name of the entire forest complex. At the end of Devil's Passage, 14 meters above the creek Jasle opened into the rock, is the entrance into the cave Muževa hiša. The cave length is about two hundred meters. Cave is very narrow without artificial lights and at its end small lake can be found. Inside the cave, strictly protected species of bats hibernates, and they should not be disturbed when you visit the cave.
ZELENI VIR (GREEN WHIRLPOOL) - a stunning 70 meter high cliff formed between two wooded hillsides and two creeks collapse from the top of the rock. One quickly disappears into the notch and the other collapses vertically in the form of a waterfall that falls in front of the cave with a small lake and flows into the Curak creek that springs inside the cave.
In this cave a small lake of emerald green colour, crystal clear and calm water can be found. Underground source- spring of water, 50 meters deep in the bottom of the cave and its named after the colour of the pond is creates.
A special attraction of this protected area is the lush beauty of the forest vegetation that has surrounded the entire landscape, the protected species of bats and the bird watching area.