 (Downstream from Lake Pochozero, the Undosha changes its name to the Pocha and flows to Lake Kenozero).Therefore the rafters start in Skarlakhta and finish at Lake Kenozero.Before the railroad was constructed in the 1970s, the only way to get to Undozero for the rafters was to start in Severoonezhsk, take rafts upstream the Iksa, and them bring them to Undozero by land.