Next to this last is the Chapel, or rather Sacrarium, with a cinquefoil- headed doorway, and a small recess for a piscina, with a projecting bracket and fluted foot. Against the West wall is a stone bench, and above it a rude squint through which the elevation of the Host could be seen from the adjoining window recess. Of the two windows, one is square, the other lancet-headed. The altar is modern. There is a mural gallery in the thickness of the wall running round nearly the whole circle of the Keep, and with remarkably strong vaulting.