One hundred years ago, explorer Colonel Percy Harrison Fawcett was sent by the Royal Geographic Society to make a thorough survey of the Rio Abuna and Acre Rivers. He encountered a Giant Snake. Fawcett ran across his snake in 1907, as he was drifting along the Rio Negro. Fawcett shot the creature and finally examined it on the river bank where it came ashore. According to Fawcett, the snake measured 45 feet out of the water and 17 in it, for a total of 62 feet.