Not far away from where I live there is a small lake in the middle of the woods called Klaretjern (Clear Lake). It is a well known diving destination because of its clear still water and a convenient way of giving the gear a nice fresh water rinse.
Here are a few shots from a quick test-dive I did there in the end of September.
Above: A split image showing the forest in the background and the northern "drop-off" below.
Above: Another shot of the wall or drop-off to the north of the lake.
Above: Shot towards the south where remains of a tree still lingers.