In 2013, a 60-year-old warning was discovered in the form of this letter by two researchers. In 1959, Paul T. Walker proved his point that the glaciers were melting at a rapid speed and to prove this fact he kept this note in a bottle and buried it under a couple of rocks. The letter asked anyone who find the bottle to measure the distance between the edge of the glacier and the bottle. The researchers followed the letter’s instructions and it was more than 200 feet. Hence proved, Mr. Paul was indeed correct.