self cleaning pigsty

This is worth a look at! Self cleaning pig sty
A pig sty with no smells and usable compost.

Wow, amazing!

I've seen where homesteaders in the US will use woodchips in an aboveground pen, but not using sawdust and not using cultivated microorganisms.

They describe digging, filling and
emptying a very deep pit,  which sounds like a lot of work.
I can imagine moving the pigs between a series of shallow pits, and planting each pit in turn.
Keeping the whole thing above ground would make it easier to harvest the compost for later.
Putting a hoophouse over it could be good , with enough ventilation.

Provocative food for thought, thanks for posting!