MULLAITTIVU: EYEBROWS were raised when the troops dominating areas deep down in IRATTAVAIKKAL after terrorists were evicted, came across one more huge monstrous cylindrical metal structure, identical to a device that enables to live underwater. (See photos).Tigers appeared to have been weilding the structure just before the troops rolled in, as all the hallmarks confirmed. This 360-ft long and 25 ft wide structure, apparently compartmentalized into three major sections, i.e. front (engine), office and the rear (relatively bigger), has been made of strong iron, and set on iron rails, like a railway carriage. In addition, a huge 300 ft-long canal with 30 ft deep water that leads to the seas beyond, has been dug touching this underwater structure, enabling it to float directly into the seas at any given time after induction. A few rotor blades that had been kept dismantled and hidden by terrorists were also found by the troops.