Learn why the ABC route from Deurali to Machhapuchhre Base Camp is the avalanche-prone zone in this region. Significantly, the following are why the above section remains the most dangerous: Steep snow-loaded slopes above the trail. Narrow valley funneling avalanche debris. Weather changes in the Annapurna Sanctuary. These factors bring together the Avalanche Hazard, Terrain Exposure, and Climatic Instability. First of all, the route from Deurali (3,230 m) to Machhapuchhre Base Camp (MBC) at 3,700 m represents the most critical avalanche risk along the ABC trek route. This route passes within the Annapurna Sanctuary area, which contains avalanche risk, fragile snow, and alpine terrain to a critical degree. As a result, anyone attempting this route must be aware of avalanche hazards, the dangers at Deurali, and the realities at Machhapuchhre Base Camp.