Windy Valley is a wind-swept gorge located on the continent of Soumerca. The valley was the secret location of the tomb of Ixis Vale, an elite Mage from the Order of Ixis. Geoffrey St. John traveled there in 3237 to recover Vale's remains only to be followed by agents Ace, Jack, and Joker of the Secret Freedom Fighters. After placing a tracker on his Extreme Gear, they followed him into the tomb, but Geoffrey escaped with Ixis Vale's bones and left the trio buried, forcing them to dig their way out. (SU: #41, #43)
- Windy Valley is, or is at least named after or based on, a level from the game Sonic Adventure.