The research was carried out by archaeologists Jim Leary and David Field, who dug a cross-section tunnel into the monument in 2007.
BBC: Prehistoric Silbury Hill 'was built in layers'
Patrick Morris, of the Friends of Cromford Canal, said only a small section of the tunnel was accessible.
BBC: Butterley tunnel gets Scheduled Ancient Monument status
During the week-long exhibition at the Scottish Parliament to celebrate the Scottish contribution to the creation and operation of the Large Hadron Collider visitors are able to walk through a full-size replica of a section of the LHC tunnel.
BBC: Scotland
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