safety

Download surrounding terrain, test map detail without reception, understand the position marker, and carry a usable backup.

Practice headlamp controls, walking-beam settings, fit, lockout, and backup power before a late return.

Reserve time for the return, use early progress checkpoints, and agree on a firm turnaround rule before starting.

Check the full time window, elevation, gusts, precipitation timing, visibility, and official alerts.

Assess phone workload, route consequences, cable compatibility, and independent navigation before adding backup power.