Dedicated Legend of Zelda fans have uncovered a detailed backstory for Breath of the Wild, hidden on the reverse of the game's Special Edition map.
The parchment map, included with North American copies of the Special or Master Edition, features a stylish set of runes embedded in a print on its reverse side.
Fans, including YouTuber Zeltik, decoded this script - the language of the game's Sheikah race - and translated the resulting message from Japanese into English.
Here it is:
"Hylians pass stories of a destined time long past where multiple races lived and worked together in harmony. The Sheikah Tribe's blue aura breathed through the land and this mutual prosperity continued until a cataclysmic disaster stuck. The Hero and the Princess attempted to seal the terror which became known as the Calamity Ganon. Divine beasts awoke from four directions and deployed a mechanical army which made the King and his people fearful. They fractured Ganon's power and sealed him but the Sheikah were banished from the land ever since"
Simply put, the Sheikah were a technologically advanced race (the creators of the neon-blue technology seen around Hyrule) who attempted to defeat Calamity Ganon using four divine beasts and mech army.
Ganon was sealed away in Hyrule Castle, but the strength of the Sheikah army was feared by the King of Hyrule, who then banished the tribe.
The video above has more theory, such as that Link was put into stasis after the battle against Calamity Ganon because the Sheikah knew they would one day need him to return and defeat Ganon once again (which does sort of keep on happening).