I suspect it's like an outhouse, that the white part is just sitting on top of a much deeper hole. When it gets mostly full, they can just cover the top with dirt and move the throne to another hole.
I reckon my glitch on the image is the blue pipe coming from the back of the crapjack, ehem, excuse me......... Head I should say.
It looks like a peice of 4-6" PVC or CPVC. I've seen it used on construction sites. The pipe may be a lot bigger than I think, as the animal & the head are both huge. You can see the pipe very well on Bruce's link.
Anyway, IMHO the image would be more convincing without the "pipe", or whatever.
:eyebrow:
Wonder if "it's a floater?" Hope not..............
Maybe the cement looking opening the "pipe" goes into is one of the gates of hell. "Some folks call it hell- I call it hades". :devil: