| 31. | There are five known shell middens on South Thormanby Island.
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| 32. | They also left behind middens of shells along the coast.
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| 33. | During the construction, ancient artifacts and middens were discovered.
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| 34. | Unlike the village, midden accumulation in these structures was relatively scarce.
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| 35. | These middens can today be identified by mounds of crumbled abalone shells.
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| 36. | There are some large coastal middens that have been excavated.
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| 37. | A single midden can hold samples of dozens of different plants and animals.
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| 38. | But middens give details unavailable from any other source.
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| 39. | Where they dug the trench was outside the delineated midden in their documents,
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| 40. | Midden contents show that the main source of protein was tuna and dolphin.
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