Inflatable SUP boards of Aqua Marina in the matter: sup surfing on the Ladoga skerries in the Republic of Karelia. Three-day tour to the north of Ladoga. The places visited are the Ladoga skerries, Priozersk, Sortavala, the Yukankoski waterfall (the White Bridge waterfall), the Paaso mound and the Heidenvuori mountain.