Which hazard is not an example of an environmental climbing hazard?

Corrosion is primarily a chemical or physical process that results in the deterioration of materials, often metals, due to environmental conditions. It occurs when these materials react with their surroundings over time. While it can be influenced by environmental factors such as moisture, it is not inherently an environmental hazard in the context used for climbing, which typically refers to immediate physical dangers.

In contrast, moisture, ice/snow, and the sun are direct environmental factors that climbers must contend with while navigating climbing routes. Moisture can create slippery surfaces or increase the risk of rockfalls. Ice and snow present significant hazards by adding weight to structures and making surfaces treacherous. The sun can lead to overheating, dehydration, or sunburn, all of which pose risks during climbing activities. These factors directly affect climbers’ safety and are classified as environmental hazards.