Trail of Feathers powerful hallucinogen? After gathering equipment in London—and advice from the British explorer Wilfred Thesiger—the long quest began. Shah went first to the mountains of Peru and a trek to Machu Picchu, the Incas’ most sacred city, then on to the mountain city of Cusco and a mysterious island on the great glittering expanse of Lake Titicaca. Picking up clues as he went, Shah's trail took him on to the coast and through the desert, to the immense animal-like etchings which form the Nazca Lines, and a remote burial ground for thirty thousand mummified corpses. And finally he took an extended
Machu Picchu push the stones up inclines. A few stones have knobs that could have been used to lever them into position; the knobs were generally sanded away, with a few overlooked. The Inca road system included a route to the Machu Picchu region. The people of Machu Picchu were connected to long-distance trade, as shown by non-local artifacts found at the site. For example, Bingham found unmodified obsidian nodules at the entrance gateway. In the 1970s, Burger and Asaro determined that these obsidian samples were from the "Titicaca" or Chivay obsidian source, and that the samples from Machu Picchu showed long-distance