
Unless you knew it was there, you probably wouldn’t spot the abandoned Catesby Tunnel.
Its entrance is shrouded by trees, buried in the Northamptonshire countryside, while its 2.7km-long body cuts beneath the grassy hills, in the middle of England. Built in 1897, the tunnel was later cast aside by the railway network, and hasn’t seen a train in almost 60 years. Today, however, it enjoys a new life as a state-of-the-art aero testing facility, and this month, it welcomed a series of visits from WorldTour team Red Bull-Bora-Hansgrohe.