Rock scaling is a technique used to remove loose rocks and boulders from steep slopes or cliff faces to reduce the risk of rockfall. Rockfall is a natural process where rocks break away and fall from a slope or cliff, which can be caused by weathering, erosion, seismic activity, or human activity. The purpose of rock scaling is to improve safety by stabilizing slopes and preventing rockfalls that might threaten roads, railways, buildings, or other infrastructure. This is done by identifying and manually or mechanically removing unstable rocks. Manual rock scaling typically involves using hand tools such as pry-bars and picks, and is carried out from the top down to avoid placing workers below unstable rock. Mechanical methods, pneumatic or hydraulic devices, or even trim blasting may be used for larger or more complex rock removals. Rock scaling is often the first step in a broader slope stabilization project and serves as a preliminary but crucial measure to mitigate rockfall hazards. It can be done during slope maintenance and is used in various environments, including underground excavation such as tunnels and mines, to ensure safe working conditions. Highly trained technicians perform this work using safety gear and sometimes rope access methods, especially on high-angle slopes, to safely and effectively remove hazardous rocks. In summary, rock scaling is the controlled removal of potentially hazardous rocks to prevent rockfall and improve slope stability and public safety. It may be done manually or mechanically depending on the situation and scale of the hazard. This technique is broadly used near transport routes and infrastructure where rockfall risks could cause damage or injury. It is also part of standard safety practices in underground excavation and mining.