protrusion

something that bulges out or is protuberant or projects from its surroundings; "the gun in his pocket made an obvious bulge"; "the hump of a camel"; "he stood on the rocky prominence"; "the occipital protuberance was well developed"; "the bony excres

चेहरे की चतुष्कोणीय अस्थि जो गालों का उभार निर्मित करती है

I saw rocky protrusions in that cave.