I have been to Allt an h-Eirbhe (somehow anglicised as Alltnaharra) many years ago. Now that is out of the way, up in the wilds in the middle of Sutherland. So there is hope yet. Not many people there.
The name suggests some confusion with Allt na h-Àiridh, where an àiridh is a sheep-pen and every place has one, ours is right below my house, usually a stone-walled divided enclosure, although ours is a nasty clangy metal modern thing and I don't know where the old one is, will have to ask my next door neighbour.