No special access issues
From Kuusamo(20km/17min) go north towards Ruka on Kemijärventie(E63/5). After you go over Pyhäjoki take second intersection to right to a small gravelroad. After 250m there`s a parking spot on the right that fits 3-4 cars. Don`t go any further on the road, there`s a cabin in the end of it that should not be disturbed. Do not block the road!
The access is easy. Just follow the edge of the swamp for roughly 350m and the rock should be on your left. It`s roughly 10m in to the forest from the open swamp area.