Upper Caveman possessed even more physical characteristics of primitive Mongoloids than did Peking Man, making him a real, true ancestor of modern Mongoloids.
上洞人出土的地點恰好與北京人出土地相同，都在河北省房山縣周口店，北京人出土地在下，上洞人在上，因此有上洞或山頂洞之稱。但他們的年代較北京人晚了卅萬年以上，距今約在兩萬年左右。