Here are a few photos from a bike ride up at Loch Loyne a couple of weeks ago.
The loch water levels are drained every September in anticipation of the winter rain/snow melt. On occasion the old main tarmac road (the original "road to the isles") which took travellers north-west to Ullapool before the valley was dammed, emerges, along with a couple of old humpbacked bridges. It's possible to follow the road through the loch bed and across the hill at the far side to eventually reach the Cluanie Inn.
Unfortunately, as you can see from the pictures below, the loch wasn't in fact drained that weekend! The alternative route we took was fantastic anyway though. I plan to go back and try again at some point.