"Network Rail is to carry out £3m of track improvements to a railway tunnel rumoured to have been Birmingham author JRR Tolkien’s inspiration for the home of favourite hobbit, Bilbo Baggins."
http://www.thebusinessdesk.com/westmidlands/news/411863-network-rail-schedules-3m-of-improvements-to-hobbit-tunnel.html?news_section=19009#