The Stone Tower: Ptolemy, The Silk Road, And A 2,000-year-old Riddle

This book is the result of a solo journey the author made retracing the old Silk Road. Along the way, amongst the mountains of Central Asia he stumbled across a landmark that, upon later researching the maps of Ptolemy, he came to realise was the geographer's lost Stone Tower. Riaz Dean collects old books and maps about the exploration of this region, which also formed the basis for his first book Mapping the Great Game.