Context
The A616 Stocksbridge bypass runs 7.5 miles from Langsett to Underbank, across the Hunshelf hillside near Sheffield, South Yorkshire. It cost £18m. In September 1987 it was still a construction site, closed to traffic and guarded at night by Constant Security. Workers had already reported strange things. Some heard children singing late at night from the nearby woods. Others saw children on the closed site who could not be found when challenged.