The first sound is the bite through ice — a hollow, confident crack that seems to confirm the whole lake is awake. Frost flakes underfoot as you walk out from the spruce-line toward the pale blue flat of Rahajärvi; tall birches stand like quiet spectators and a low wind pushes across the frozen surface as if checking your courage. Guides from Xwander hand over thick overalls and rubber boots, then demonstrate the kaira — the auger that carves a round window into winter water. The act is mechanical and intimate: drill, peel, peer. Then the lake answers, sometimes with a sudden tug.