Wolf vs boars! or bandit versus npc!!! Maybe if you have a ramp everywhere like like a topless hill you got more chances to trap them?

It's just a decoration really -- but you can spawn bandits and boars in one of my other mods and put them in the octogon to fight.

it was good idea to save game before jump in octogon... once i am down there i cant move out, like i put my self in prison. i am missing point of this structure, maybe any one can tell me how it works?

I was thinking about a modification like this: when recruiting a villager, you could spar with them and increase your combat points, and so on. Could you make a version of the wooden barn and select a villager to fight? It would also allow for sparring and training of villagers. This would positively impact the immersion of the game.

WOW! Amazing