I really do love a good reflection shot.
The mist in the background isn't actually mist, as there is a small village further down this glen and so what you are seeing, is actually the smoke generated from their peat fires, which is still a common mode of heating in the more Northern parts of Scotland and with peat being such an abundant resource that covers all the hills, they just harvest it, then let it dry for a year or so before using it as fuel cut into blocks.
Dave