Redshift Community

I'm stuck on Island of fire and can't figure how to get to island of ice. I have destroyed the flesh eaters and made it into the hollow tree. However I don't know how to turn on the transporter to Thule. Can someone tell me how to get that trasporter activated, please....

You know the door between the two teleporters? Stand on the Thule teleporter side of it, face the open door and tap it to close it and the teleporter activates