“Dash it all!” I expostulated, after turning over the letter for the tenth time, “This simply doesn’t make sense!”
He looked up politely for a second, before returning to his copy of the Polar Stereograph.
Undeterred, I continued: “The letter describes a journey setting out from the Carriage Park at Ozleworth Park, travelling True North for 50.7 kilometres (kilometres! I thought I smelt French perfume on the paper), then True East for 50.7 kilometres, True South for 50.7 kilometres and finally, True West for 50.7 kilometres – at the end of which is concealed some sort of cache”.
“I cannot imagine”, he replied with amusement “this adventure requiring a walk much beyond thirty minutes. But you know my methods. Apply them, and it will be instructive to compare results”.
“I had already thought of that!” I protested fervently, “But the rum thing is that the letter begins by emphasising that the cache is not hidden at the start point of the journey”.
Knocking out his pipe, he uncoiled himself from the armchair he had inhabited for the past hour. “A rhumb thing indeed. Now come along, there may just be time to get there before Ashleydash does!”.
You can check your answers for this puzzle on GeoChecker.com.