Speculation continues as to how a tunnel large enough to accommodate a man came to exist in a Lubbock neighborhood.

Texas Tech historian Dr. Robert Tidwell said on KFYO's Lubbock's First News that the tunnel could have been used by rum runners or speak-easy operators during prohibition.

The tunnel appeared Wednesday after Lubbock resident Lee Smithwick's lawn collapsed over the tunnel, which is braced with rail road timbers.

The tunnel appears to be roughly 36 inches wide and six feet high.

Local cable television system, Suddenlink, has offered to send a fiber optic cable with a camera underground to explore the tunnel.

Listen to the full interview with Dr. Robert Tidwell here:

To listen to the interview on iPhone, iPad, or other mobile devices, follow the link below.

Dr. Robert Tidwell Interview 09/06/13