Rockfall risk is one of the most present risks in mountain regions. A forest management intervention can increase the protection role played by mountain forests. Many structural protection structures making with fresh wood are present in the Alps to protect human against rockfalls activities. Since traditionally forest managers are using dead wood, in particular slash wood. Dead woods used are mainly the timbers produced by thinning or clear-cutting harvesting. These structures have been principally developed in Austria at the end of last century. Today, use of slash as protection is present across all the alpine space.