The road from the Kentish ports of Rutupiae (Richborough), Dubris (Dover), and Lemanis (Lympne) via Durovernum (Canterbury) seems to have first crossed the Thames at a natural ford near Westminster before being diverted north to the new bridge at London. The Romans enabled the road to cross the marshy terrain without subsidence by laying down substrates of one to three layers of oak logs. This route, now known as Watling Street, then passed through the town from the bridgehead in a straight line to reconnect with its northern extension towards Viroconium (Wroxeter) and the legionary base at Deva Victrix (Chester). The Great Road ran northeast across Old Ford to Camulodunum (Colchester) and thence northeast along Pye Road to Venta Icenorum (Caistor St Edmund). Ermine Street ran north from the city to Lindum (Lincoln) and Eboracum (York). The Devil's Highway connected Londinium to Calleva (Silchester) and its roads to points west over the bridges near modern Staines. A minor road led southwest to the city's main cemetery and the old routes to the ford at Westminster. Stane Street to Noviomagus (Chichester) did not reach Londinium proper but ran from the bridgehead in the southern suburb at Southwark. These roads varied from wide.