Let's be honest. Most people who get into trouble in Scottish winter mountaineering don't lack fitness. They lose track of where they are. Snow fills in the paths, cloud drops over the ridge, and ground that looked obvious on the drive in suddenly looks like nothing you've ever seen. Navigation isn't a nice extra for keen types. It's the skill that gets you off the hill when the weather turns. Here's what changes in winter, what kit earns its place in your pack, and how to pr