love those rocks, their so round.
Thanks! Hence the name 'Smooth Hillside'
They're really awesome, I went to a rock store and got them cheap.
Interesting method. Never have seen a dirt tank without a cap. It will be good to see the results.
I've never done it before either, but I've heard of someone doing it with success and have been encouraged to try it so I decided I would
Still doing some small tweaks to the dirt, to make it more like a naturally eroded hill.