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Burnt mound
A burnt mound is an archaeological feature consisting of a mound of shattered stones and charcoal, normally with an adjacent hearth and trough. The trough could be rock-cut, wood-lined or clay-lined to ensure it was watertight. Radiocarbon dates vary quite widely, the earliest being late Neolithic, with clusters of dates between 1900–1500 BC and 1200–800 BC, with some outliers in the Iron Age. There are also some dates that go into the early Medieval period. The technology used at burnt mounds has much greater antiquity and is found from the palaeolithic onwards.
==Purpose==
The shattered rock fragments are thought to be the remains of stones heated in fires, which were used to heat water for cooking, bathing, dyeing or leather treatment. The shattering of the rock appears to have been the result of thermal shock when the heated stones were dropped into liquid, normally believed to be water. The mound is assumed to result from the periodic clearing out of the trough, with the stone fragments and charcoal being cast up into a mound. The mound is frequently a crescent shape, which is seen as being the result of the upcast.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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