From the archive: The invisible city: how a homeless man built a life underground

We are raiding the Guardian Long Read archives to bring you some classic pieces from years past, with new introductions from the authors. This week, from 2020: After decades among the hidden homeless, Dominic Van Allen dug himself a bunker beneath a public park. But his life would get even more precarious. By Tom Lamont. Help support our independent journalism at theguardian.com/longreadpod