Windy Valley

Windy Valley is one of the levels featured in Sonic Adventure. It is located in Windy Cave in the Mystic Ruins. The area can only be accessed by using the Wind Stone to open the wind currents. The level is cut into three main parts: the beginning grassy section, the tornado, and the spiraling tracks near the end. Sonic goes through all three, while Tails goes through only the third, and Gamma goes through only the first.

Sonic
In Sonic's story, Windy Valley is the second level. Here, he and Tails attempt to track down a Chaos Emerald to stop Chaos.

Tails
Windy Valley is Tails's first level, where he must race Sonic to the Chaos Emerald at the end. Also, by flying, you can go from beginning to end without touching the ground. This is because the whole level goes downward.

E-102 Gamma
Gamma searches here for E-103 Delta to free him after the Egg Carrier crashed. Like his other levels, enemies and other structures must be destroyed to increase the time limit. This is his third level.