https://gitea.wildfiregames.com/0ad/0ad/src/commit/13453a3c7bbd31ca84c4dd6ec3e92d1f3e615648/binaries/data/mods/public/simulation/templates/structures/han/civil_centre.xml#L5 That's this value that drives the height. (You cannot change the <Square depth="35.0" width="43.0"/> though as it will mess up with the blue outline)

I think yes it would be better. You can make a ditch around the kurgan with a small pallisade and there add an entrance, with the statues. 

Then I would like to request to shorten it, maybe about until 50-65% if possible. I don't know much about modding, but if anyone can guide me how to change the boundary then I would be happy. Happy to modify all CC so their hitbox is on the surface/bigger, and make people's life miserable muahahaha! (joke)

Ownis_Ichigo quit without resigning, would be great to get the points metadata.jsoncommands.txt Thanks a million! :-) 

Thanks for the refs. So I guess I should get rid of the entrance and give the hill a more conical shape?