The wind off Vatnajökull bites with the kind of clarity only Iceland can deliver — cold, sharp, honest. At the parking lot near Fosshotel Glacier Lagoon you’ll meet guides in bright shells and helmets, the small group clustering around like expedition ants. Within an hour you’re at the glacier’s edge: a landscape of impossible blue, serrated ridges, and crevasses that seem to inhale fog and light. The guides fit crampons, hand out ice axes, and walk you through the basics; then the ice opens beneath your feet and the glacier starts to move you forward.