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Portskewett (Welsh: Porthsgiwed or Porthysgewin) is a village and community (parish) in Monmouthshire, south east Wales. It is located four miles south west of Chepstow and one mile east of Caldicot, in an archaeologically sensitive part of the Caldicot Levels on the Welsh shore of the Severn Estuary. The Second Severn Crossing passes overhead carrying the M4 motorway. The community includes Sudbrook, Crick and Leechpool. Black Rock is located just over half a mile away from the top end of Portskewett. This is 4miles away from Chepstow and 1mile away from Caldicot Castle