The climbing path that goes to the Toaca Peak (altitude 1907 meters) of massive Ceahlau – Romania, is steep and covered with stones that roll with ease. This is a not difficile tourist route, but when it rains, the rocks are slippery. In these places, in most of the time, the winds blows, and low-altitude clouds in the sky are moving with great speed. When the wind meets coniferous vegetation, occurs a specific whistling.