| 1. | The nails have square or rectangular shafts that taper to sharp points.
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| 2. | That nail has a uniform rectangular shaft with a roughly rectangular head.
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| 3. | The minaret is a rectangular shaft with a second receding story.
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| 4. | The early tombs consisted of a deep rectangular shaft with one or two chambers dug from its sides.
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| 5. | A rectangular shaft, presumably an air intake shaft, marks the point at which the tunnel has become blocked and is impenetrable.
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| 6. | The tomb consisted of a rectangular shaft about 3 m deep, filled with gravel and river sand containing specks of alluvial gold.
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| 7. | The base sits on top of the large rectangular shaft, set back slightly towards the top, which itself rests on a two-stage base of rectangular blocks.
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