Navigable river
Major Roman road
Coastal/river minster
Anglo-Saxon burh
‘Interchange’
Productive site/market
Trading settlement
Native/Roman fort
Viking fort/base
Shetland & Orkney
Kaupang
Hebrides
Birka
Portmahomack
Dumbarton
Iona
Tay
Forth
Hedeby
Clyde
Tyne
Chester-le-
Street
York
Man
North
Sea
Irish
Sea
Severn
Dorestad
W’schowen
Domburg
Thames
Quentovic
Rouen
Scillies
Coastal/river minster
Anglo-Saxon burh
Navigable river
Major Roman road
Productive site/market
Trading settlement
Native/Roman fort
‘Interchange’
Viking fort/base
Shetland
& Orkney
Birka
Portmahomack
Great Glen
Hebrides
Kaupang
Iona
Tay
Clyde
Dumbarton
Ribe
Forth
Hedeby
Tyne
Eden
Wear
Chester-le-Street
York
Man
Derwent
Ouse
Don
Ribble
Humber
North
Sea
Mersey
Dee
Irish
Sea
Witham
Trent
Welland
Nene
Yare
Severn
Gr. Ouse
Colne
Dorestad
Avon
Lea
Thames
Wye
W’schowen
Domburg
Stour
Scillies
Exe
Rother
Itchen
Quentovic
Rouen