Lake Hartvik (Hartvikvatnet in Norwegian) is currently under construction. Phase one saw the cutting out of the base and the application of cork bark, foamcore and filler to make the banks.
Then I looked back at the map and realised I'd left no room for the streams that drain into and from the lake! A quick hack with a Stanley knife fixed that.
Also under development are a batch of trees made from squirrel-chewed pine cones: