A question for the cartographic detectives.
Which English summit has the largest Activation Zone?
My nomination is Detling Hill - SE-013. The nominal summit is at TQ804586 with a height of 200m, but, by the rules of the English Association, a valid activation can take place anywhere above the 175m contour line. Using the OS 1:50000 maps the contour lines are at 10m intervals, so, to be on the safe side, I have used the 180m contour as the limit of the Activation Zone. As far as I can see, the area above 180m stretches from Junction 3 on the M2 (TQ749622) to a point near the village of Dunn Street (TQ983482). I make that a distance of around 27.25 kilometres.
Have I missed a vital contour line somewhere? Can anybody nominate a summit with a larger Activation Zone?
73 de Les, G3VQO