The giant's kettles at Aholanvaara are a set of glacial potholes carved into bedrock south of Salla. They are not a quick roadside stop: the access trail is rough, steep in places, and can be slippery, but that effort is part of the appeal.
Come with proper shoes and enough time to walk the nature trail slowly. The best moments are not only the potholes themselves, but the sense of moving through a quiet forest landscape where geology, water, and ice have left strange marks.