Bosing (archaeology)

Bosing is an unsophisticated method for the discovery of buried archaeological features such as pits and ditches dug into a thin substratum of rock, such as limestone or chalk. The technique involves hitting a block of wood laid over the ground surface with a weighty hammer and assessing the sound given out. For example, if the wood gave out a heavy thudding sound, then this would indicate that the underlying bedrock had been disturbed while undisturbed bedrock would emit a thinner and sharper tone. Methodically repeating the process across an area and noting the sound pattern will reveal the extent of the underground features.^[1]

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