Last nights walk found a 1-25000 roamer, in text at the bottom it said
Add 1min for 10m of ascent
Add 1min for 30m of steep descent.
Not Naismiths or Tranters stuff, when did this calculation come into use? I did a google and all that comes up are divers decompression times etc. I dont think it was a diver on the middle of Holcombe Moor.
Any clues, ta.