The ride back down from the Ptarmigan to the base station (which is still pretty high above the glen below). There's no sound.
Here's a funny thing! In English, we refer to this range as 'the Cairngorms', after the mountain Cairn Gorm, which isn't the highest of the peaks by any means but is probably the most visible of them, the higher ones being further into the plateau. In Gaelic that's An Càrn Gorm, 'The Blue Cairn'. However, the mountains' Gaelic name is Am Monadh Ruadh... which means 'The Red Hills'. And now you know.
