The Decayed Forest is a location in Xenoblade Chronicles. It is located in Makna Forest. It is located south of Yellow Flower Grove and northeast from Precipice Bridge and Glowmoss Trihenge.


When the party is tracking the Leone Telethia, they come across this place. It is explained that the Telethia absorb Ether from their surroundings, and the Leone Telethia has taken all the life from the clearing. The Leone Telethia then flies in, and the party fights it, eventually defeating it.