Immediately leaving Forsvik, you have to traverse a narrow canal section. This was
originally controlled by a semaphore system by the lock, but traffic lights have now taken over. You then have to traverse
a further narrow canal section, which is operated as a one-way system governed by sound signals. Some spice is added by the
fact that one bank has underwater hazards and the other has overhanging trees. You then enter the sublimely beautiful Lake
Viken is shallow and wide, but bizarrely, half way up, in the middle of the lake,
is a narrow channel, with a wall, just awash, which you have to follow. Viken, early in the morning, was, for me, the epitome
of Sweden, with its still water, and banks of dense pine forests. This part of the canal is much more wild than the earlier
part, and the wildlife is exceptional. At the end of the lake, the lock at Tatorp merely corrects for water levels.