Owachomo is a Hopi Indian word for rock mound, suggested by a rock outcrop on the upper left side of the bridge. It looks different from Sipapu and Kachina Bridge because it no longer straddles all the streams that carved it, so it appears to be an arch. Flowing water is required to carve a hole through a rock wall to form a bridge, while an arch is freestanding and does not span a water course. Natural Bridges is famous for its three spectacular bridges, but the monument also contains smaller and less noticeable arches.