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| | Broch - Wikipedia, the free encyclopedia |
 | | On average, the walls only survive to a few metres; the best examples (Carloway, Telve, Troddan, Mousa and Dornaigil) are up to 13m tall, however it is not clear whether all brochs originally stood this high. |
 | | The evidence for this assertion is still fairly scanty, though excavations at Dun Bharabhat, Lewis, have supported this interpretation. |
 | | The main difficulty with this interpretation continues to be the potential source of structural timber, though bog and driftwood may have been plentiful sources. |
| en.wikipedia.org /wiki/Broch (1047 words) |
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