UK engineer spent 20 years digging tunnels under home; now they head to auction

From the outside, it looks like an ordinary bungalow tucked away on the outskirts of Reading. There is a garden, a swimming pool and a workshop, nothing to suggest that beneath the property lies a sprawling subterranean world that took two decades to create. Descending more than 15 metres underground are four levels of hand-dug tunnels, complete with rooms, corridors, a railway, a one-tonne goods lift and secret entrances, adds an online report by AOL.A family project undergroundThe extraordinary project was the work of British civil engineer Tony Deane, who began excavating beneath his family home in the 1980s. What started as a personal building project gradually grew into an underground complex covering more than 1,300 sq ft. His six children eventually joined in, turning what might have been a solitary hobby into a remarkable family undertaking, adds the report.There was no fleet of construction machinery involved.