| http://www.w3.org/ns/prov#value | - The elevation of the City ranges from sea level at the Thames to 21.6 metres (71 ft) at the junction of High Holborn and Chancery Lane.[33] Two small but notable hills exist within the historic core: Ludgate Hill to the west and Cornhill to the east; between them ran the Walbrook, one of the many lost rivers of London ??? another such river in the City is the Fleet.
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