Ключевые слова: alpine, alps, barrier, boulder, brake, cliff, collapsing, construction industry, danger, engineering, environment, environmental issues, eroded, fall, fence, forest, geology, green, hill, italy, landscape, landslide, landslip, mesh, metal, metallic, mountain, natural disaster, nature, netting, pine, pole, post, precaution, prevention, protection, rock, rock fall, rockfall, safety, security, security system, steel, steel cable, steel net, tree, trentino alto adige, weathering, wire mesh, woods,