I sadly had to remove an infected cherry tree from my garden recently, so with the hole that was left I decided to make a wildlife pond. Heres the tree before it was removed...
and shortly after it was removed..
I never got around to lining the pond but is im on heavy clay the pond filled up by itself, a little planting up and heres how it looks now...
By next spring I intend to have the pond lined as the water soon soaks away in dry weather, and I hope to have planted the area with native plants etc, but Im pleased with it so far.