I've got this huge oak tree on my property, probably six or seven feet in diameter. It's dead and really should be cut down. I've got plans on turning the three or four foot high stump we will have into a pond. Just carve out a bowl shape and put some sort of liner in and there you go. I've thought about installing viewing windows in the side but that prolly wont work.
Damn.....now you got me thinking again..... Porthole type viewing window... a canope made out of the upper seaction complete with solar powered lighting......ARGGGGGGGGGGGGG make it stop.