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428 staircase leading to the platform at the top of the tower. These peculiarities will be understood from the annexed section and plan of one from De la Marmora's work.

When the Nurhags are of more than one storey in height, they are generally surrounded by others which are attached to them by platforms, often of considerable extent. That at Santa Barbara has, or had, four small Nurhags encased in the four corners of the platform, to which access was obtained by a doorway in the central tower; but frequently there are also separate ramps when the platforms are extensive. The masonry of these monuments is generally neat, though sometimes the stones are unhewn, but nowhere does there appear any attempt at megalithic magnificence.