|Location Map ( geo)|
The Reigate Tunnel is the earliest road tunnel built in Britain (and possibly Europe). It was built in 1823 by W Constable to avoid a detour round the Castle Mound in Reigate. It is around 55 yards (50m) long, bored through sandstone, and was used by vehicular traffic as recently as the 1970s, as part of the A217. Traffic in Reigate now goes round a one way system, of which Castle Mound forms the centre.