Residents have been left horrified after a huge 16-foot deep hole opened up above a ten-mile long tunnel being built for the controversial HS2 high speed rail line.<br /><br />The hole, which is about 6m (20ft) wide, opened up above part of the Chiltern tunnel in Little Missenden, Bucks.<br /><br />Anti-HS2 campaigners have said it is evidence that tunnelling on the controversial infrastructure project should stop.<br /><br />And, local residents are concerned about the risks the hole presents to the safety of communities in the area.<br /><br />Catherine Bunting, a parish councillor for Great Missenden and Prestwood, said: "Residents want drilling to stop whilst the safety of the aquifer is independently assessed.
