And what bowels they are! Although the initial plan had most of Fort Warren's armament arrayed atop its barbette tiers and terrepleins (on all of those previously-mentioned pintles), the casemates along Fort Warren's eastern wall were originally designed to house individual 24- or 32-pounder smoothbore guns...which never came to pass, but evidence of this intent is plain on the floor. See those eyebrowlike curves on the floor? That's where iron bands were bolted, atop which such a gun's traversing wheels would run.