The North Shropshire Plain is an extension of the flat and fertile Cheshire Plain. It is here that most of the county's large towns, and population, are to be found. Shrewsbury at the centre, Oswestry to the north west, Whitchurch to the north, Market Drayton to the north east, and Newport and the Telford conurbation (Telford, Wellington, Oakengates, Donnington and Shifnal) to the east. The land is fertile and agriculture remains a major feature of the landscape and the economy. The River Severn runs through the lower half of this area (from Wales in the west, eastwards), through Shrewsbury and down the Ironbridge Gorge, before heading south to Bridgnorth.