The importance of navigational aids may have been emphasised by a series of incidents around the Yorkshire Three Peaks as the Cave Rescue service has had to deal with several lost walkers in recent days.

On Saturday (October 8th), a solo walker attempting the Three Peaks Challenge got lost in low clouds and bad light as he tried to descend from Ingleborough towards Horton-in Ribblesdale.

It was only after carrying out mobile phone conversations that it was established he was on Park Fell, from where he was advised on how to get down safely.

Having Ordnance Survey maps may help those trying to navigate in difficult weather on the hills, something that may be particularly important in the darker months of the year.

The rescue service also had to help down a pair of walkers similarly lost in cloud on the same mountain yesterday (October 9th).

Last week, Tayside Police issued warnings to walkers to be well-equipped when climbing mountains in Perthshire, noting recent rescue incidents had included people heading for the hills without maps.