Before there was the Valley of Wonders, a wealthy and powerful human king ruled the land that was going to be the Valley of Wonders. His name was King Burton. A decade after he was crowned king, many factions and nations invaded his land, greedily seizing his rich ports and cities. His kingdom limited to the areas around his main city, King Burton discovered a magical paradise south to his kingdom. He used the magic to cast a series of mountains all across what used to be his richest lands, so he would be safe from the invaders.
Right before King Burton died, he told his son, the heir, to not invade the land outside the kingdom, as it will leave them open for an allied attack. His son did listen to this, his descendants did the same. Until the reign of Emperor Conrad, he wanted to attack the land outside the kingdom, greedy for power. It was successful for a while, but then a large band of orcs attacked Conrad in his new palace in the city of Deathskull. His empire fell apart shortly after.
Centuries after, the Wizards of the Circle of Evermore came across the land, and waged many wars over it.