Umadashis widely vary in size from a small one built only by constructing earthworks, which is not worth calling an umadashi, to a huge one, such as those of Nagoya-jo Castle, Shinoyama-jo Castle, and Hiroshima-jo Castle.
土塁を築いただけの曲輪とは言いがたい小さなものから、名古屋城・篠山城・広島城のように巨大なものまで存在する。