Makes sounds like: "Release me and you will be rewarded greatefully!"; "What is this? Demon Legs lying here? Someone might have lost them."; "I'm trapped, come here and free me fast!!"; "I can bring your beloved back from the dead, just release me!"; "What a nice shiny golden armor. Come to me and you can have it!"; "Find a way in here and release me! Pleeeease hurry!"; "You can have my demon set, if you help me get out of here!".
Surrounding the infested area there are 5 squares that cause the Demon Oak to yell.