Educational and entertaining! What more can one ask for? Mark Adams retraces the footsteps of Hiram Bingham, who introduced Machu Picchu to the world in 1911, then Adams returns to confirm the Incas‘ engineering was superbly accurate aligning with the winter solstice. Adams is self-deprecating but clearly very brave, willing to expend an enormous effort when he hadn‘t so much as tented in his own backyard as a child. A book not to be missed for ⬇️