However, some climbers have also reported similar experiences, many describing uncontrollable feelings of fear and panic, some seeing a huge grey figure behind them, and others only hearing sounds. For example, in 1904 climber Hugh D. Welsh heard unexplained "slurring footsteps" near the summit of Ben Macdhui and had "an eerie feeling of apprehension", while in 1945 Peter Densham, a mountaineer and rescue worker, heard “a crunching noise” and was “overcome by a feeling of apprehension” and in 1948 Richard Frere, a climber, wrote about his sense of “a Presence, utterly abstract but intensely real” on the mountain and heard “an intensely high singing note”.