'The Lion Grotto at Dewstow' 1890's UK.
I want to make one of these in my Garden how cool would that be. I have picked out a location to put it and I think I can use it to help water the other parts of the garden also. I live on a hill I think the bedrock my be as deep as 20 feet that is pretty deep. I hope I hit it at 12 feet to build the walls on. Well we will see next week I will start should be in the 50's ,now it is only 8F out Burrrr. I can't wait to get started, but that will pass after moving 2 or 3 tons of earth with a shovel and a wheel barrel.