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Me exploiting today's 'half the UK population' discourse
(I calculate that 33.6 million people live in the red areas)
Map of the day today is all areas of Great Britain within / not within 10 miles of a railway station, and is Berwick the only lonely circle?
A little bit of map fun today with elevation data - a kind of topographic map, with lower elevations filling up first - spot the Danube, the Alps and all sorts of other things (elevation data from @CopernicusEU)