Pick a scale that matches ambition and terrain detail, balancing leg length with needed precision. A 1:25,000 reveals gullies and micro‑ridges for complex approaches, while 1:50,000 speeds big‑picture planning. Fold thoughtfully, waterproof edges, mark legends, and note grid references clearly for quick communication under pressure.
Contours whisper where snow drifts, cornices lurk, and benches invite rest. Watch for tight stacks slicing into gullies, subtle saddles bridging valleys, and spurs that mislead in fog. Trace index lines aloud, sketch profiles, and compare map shadows to real slopes until intuition feels earned.