4 walkers (3m, 25, 1f, 14) with 2 dogs became disoriented in mist whilst walking on Ingleborough. The walkers were able to contact the police via mobile roaming, but were unable to give an accurate location. After several mistaken locations, they found Gaping Gill, and were able to contact the duty controller directly by responding to his calls to them. As visibility was poor and night had fallen, they were…