Those using Ordnance Survey maps
to navigate may find they are not being trusted by ambulance crews in the event of an emergency.
In its Walking Forward monthly email, the Ramblers has raised concerns over instances of walkers dialing 999 and being asked for postcodes, rather than grid references.
Such information may be of little use when the nearest properties to which a postcode would refer may be far from the slopes of hills where incidents occur, whereas a map reference can pinpoint a location.
The Ramblers has asked for anyone with such experiences to let them know, as such cases have caused "confusion and delay" in getting the emergency services to people in difficulties.
Navigation with Ordnance Survey maps
is a good way of avoiding the sort of errors made recently by a group of walkers trying to climb the national three peaks, who ascended the wrong Scottish Munro.
Instead of climbing Ben Nevis, charity fundraisers Team Wayne crossed the glen and made their way to the somewhat lower (3,277 ft) summit of Stob Ban on the Mamores ridge.