There is a good description on the SMC Guide “Highland Scrambles North” and Corrie Na Caime is a wonderful wild corrie. Other guides deride this route as loose in places and there have been a couple of accidents here so care must be taken if descending from the Munro Mullach An Rathian. There are a few loose blocks and screes but in winter it is a superb expedition and one I used in my days in the RAF Mountain Rescue team with up an coming party leaders. It sorted a few out especially in poor visibility these were places we could end up and did on Rescues it is wild land and care has too be taken.
In winter when it is frozen hard it is a long walk in but you are rewarded with a Corrie of great grandeur. There are quicker ways onto the ridge but to climb the full ridge and Meall Dearg is “similar to Tower Ridge” according to Dan Bailey in Scotland’s Mountain Ridges. I agree with that but found the small buttress fairly tricky that guards the buttress ! Dan gives a detailed description in his wonderful book.
Scotland’s Mountain Ridges – Dan Bailey
A guidebook covering the best summer scrambling, rock climbing and winter mountaineering on Scotland’s ridges, from the remote Cairngorms to the splendour of the Cuillin. With inspirational photographs, the guidebook is both a celebration of the landscape and a practical route guide.