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The Discoverer series are designed for tourist and leisure activities. Each one covers an area of 40km x 30km at the scale 1:50,000. There are 93 sheet in the series. Discoverer Sheet No. 7 covers Londonderry and includes Limavady, Eglington and Dungiven.
The Discoverer series are designed for tourist and leisure activities. Each one covers an area of 40km x 30km at the scale 1:50,000. There are 93 sheet in the series. Discoverer Sheet No. 7 covers Londonderry and includes Limavady, Eglington and Dungiven.