There’s a part of the final metres of the ascent to Blackhead Mountain that is a vertical climb and one from which you should not look back down if you suffer the slightest vertigo or you will invite a case of the wobblies. It’s even worse now that it’s entombed in ice. My husband and dog hopped up it like mountain goats and I was left in the metaphorical dust, grappling with uncertainty, stabbing my spikes into the ice and, finally, hoisting myself up over the rocks with the roots of an aging birch tree. As I finally managed to haul myself over the top, I wondered if there was such a thing as hand crampons attached to a set of gloves because they would have made the job much easier.