Advance by the data
Each camp records elevation, pressure, weather, and load before the next move.
Section 04 / Field doctrine
The mountain is measured.
A route is only as sound as the record carried forward.
Survey ref.28,000 ft
Carry only what earns its place
Every crate is counted at the icefall, then assigned to the next safe cache.
Treat oxygen as a clock
Pressure is checked at each halt; the summit window is a measured allowance.
Leave a clear route home
A good ascent preserves the bearings, supplies, and margin for the return.