Windy Cave is a location in Xenoblade Chronicles. It is located on the lower level of Bionis' Leg. It is a large cave northeast of Raguel Bridge - North. Inside the cave are some extremely strong monsters, such as a large number of level 74 Royal Caterpiles. In the middle of the cave is the rock pillar with the spiraling path up it which leads to Spiral Valley. This path is blocked halfway up unless Making a New Path is completed. This path allows the party to revisit the top platform of Spiral Valley without defeating the Immovable Gonzalez.

Windy Cave can be accessed from the upper level of Bionis' Leg by jumping into one of the holes in the ground, or from Raguel Bridge by taking the path left of Raguel Road.