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In page East Anglia:

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East Anglia is bordered to the north and east by the North Sea, to the south by the estuaries of the rivers Orwell and Stour, and shares an undefined land border to the west with the rest of England. Much of northern East Anglia is flat, low-lying and marshy (such as the Fens of Cambridgeshire and Norfolk), although the extensive drainage projects of the past centuries actually make this one of the driest areas in the UK.[citation needed] Inland, much of the rest of Suffolk and Norfolk is gently undulating, with glacial moraine ridges providing some areas of steeper relief. The highest point in Norfolk is the 103 metres (338 ft) Beacon Hill;[1] the supposed flatness of Norfolk is noted in literature, including Noël Coward's Private Lives – "Very flat, Norfolk".[2]: 23