The Lymph Vessel リンパ管, rinpa-kan?, lit. "Lymph Ducts") are a facility in the Tower of Harvestasha located halfway between Archia and Clustania, right above of the Garvelt Bridge and the Kniehar Signal Station, and right below the Slave District. It's pretty similar in appearance to the Silver Horn from the First Tower of Ar tonelico, given the abundant presence of golden horn-like pipes through the area, and there are also several CD-like platforms (assumed to be made from Grathnode) that serve as elevators and footholds.