
1) Valley of County Durham
Found on
https://www.crosswordclues.com/clue/teesdale

Teesdale is a dale, or valley, of the east side of the Pennines in England. Large parts of Teesdale fall within the North Pennines Area of Outstanding Natural Beauty (AONB) - the second largest AONB in England and Wales. The River Tees rises below Cross Fell, the highest hill (2,930 feet O.D.) in the Pennines, and its uppermost valley is remote an...
Found on
http://en.wikipedia.org/wiki/Teesdale
[district] That part of the district south of the River Tees is historically part of the North Riding of Yorkshire, and made up Startforth Rural District before the Local Government Act 1972 came into effect in 1974. The other predecessors to the district were Barnard Castle urban district and Barnard Castle Rural District. Much of the area...
Found on
http://en.wikipedia.org/wiki/Teesdale_(district)

district, administrative county of Durham, northeastern England, in the southwestern part of the county. The district lies on both sides of the River ...
Found on
http://www.britannica.com/eb/a-z/t/20
No exact match found.