Hundreds of years ago,there was a civilization that lived in this particular area. They were known as the Cibola tribe, the first inhabitants of the New World; a powerful group known for its complete dominion of manna. (Nature Energy)
The Cibola tribe lived in peace with nature. Thanks to the rich manna, their temples and buildings, along with the streets and water became golden. They guarded a "treasure", that treasure was locked down in the gate below the temple in which they denominated as "The Gates of the Underworld."
They lived peacefully for many years, until one day, they were attacked by unknown forces who wanted that treasure stored away in the temple; the Cibola tribe faced countless battles against a race we know as Sombras. (Shadows)
The Sombras are beings who can absorb manna from humans. These creatures destroyed entire civilizations in a blink of an eye. It is unknown how those beings were created or how to kill them. Their objectives were to find the treasure that the Cibola guarded. The Cibola tribe fought bravely but they were outnumbered and faced the brink of extinction. The members of the tribe decided to lock away that treasure forever and created Seven Golden Keys.
The power of the keys was too much that turned everyone including the sombras into Gold. Only seven priests were able to withstand the power and decided to take the survivors and spread across the continent.
Time passed and the Cibola tribe completely disappeared, the Golden City of Cibola slowly became one with nature leaving no trace at all. The legend says that these priests established themselves in seven cities across the continent.
Stories of the Seven Cities of Gold spread throughout the world, thus many explorers from Europe came to the New World in search of those cities of Gold. Multiple battles erupted creating the Age of Conquest.
Despite all their efforts, the Golden cities were never found. The legend was slowly forgotten, and the Golden cities are remaining lost in space and time. In a region between the Northern part of Mexico and the Southern part of the United States, there is a region called the Borderland region, deep in the mountains there is a scripture that has an ancient language that quotes:
The gift from the Gods will forever be locked
Seven keys are required to open the gates of doom
Thousands of lives must be sacrifice before its blocked
Under the blood tainted CRIMSON MOON