In many areas you can also see the well-known all around the world stone cairns – small piles of rocks, made by the walkers. They would usually show some alternative or unofficial ways – very often the way to a certain peak or lake on the side of the main route. As far as they are made by whoever passes, one cannot rely only on them, especially in low visibility conditions. “Unofficial way” means that there are restrictions in the national and nature parks, reserves and water catchment areas, and it’s forbidden to walk outside the marked routes. Very often this is impossible, especially in winter, and at the moment in many areas (but not everywhere!) the control of keeping these regulations is left mainly on the conscience of the hikers.