In today's video, we delve into the perplexing story of the SOS sign found in Daisetsuan National Park, Japan—an unsolved mystery that has puzzled investigators for years. Join me as we unravel the bizarre circumstances surrounding this case.

- The discovery of the SOS sign and the rescue of two hikers.

- The mysterious human skeleton and personal belongings found nearby.

- The disturbing recorded message with an unknown man's voice.

- The investigation and the eventual misstep in identifying the remains.

- The unanswered questions and theories surrounding this enduring enigma.