Are you the ultimate map-reader? Do you know your trig points from your national trails? Can you calculate using contours? And can you fathom exactly how far the footpath is from the pub? Find out with over 200 fascinating and fiendish puzzles for old and young. Track down hidden treasures, decipher geographical details and discover amazing facts as you puzzle your way through the Ordnance Survey’s maps that capture Britain. From military boundaries, power networks and industrial heritage to national parks, Olympic events and changing landscapes, this collection of 40 maps showcases the work of Ordnance Survey – the best and largest map creators in the world – and provides inspiration for hundreds of quiz questions to crack.