Rock nets are protective structures made from strong materials like wire mesh or netting, designed to prevent rocks and debris from falling onto roads, buildings, or other vulnerable areas. They are commonly used in mountainous regions where erosion or landslides can pose a risk to safety and infrastructure. These nets are typically anchored to the ground or rock face and can be customized to fit various terrains. By catching falling rocks, rock nets help to minimize damage and enhance safety for both people and vehicles in areas prone to geological hazards, such as landslides and rockfalls.