I believe these Carbonite Chamber Gantry ways are meant to be like these in concept art. But like in ANH when the heroes are trying to save leia the tunel has a matte painting at its end that when you see it from diferent angle it brakes the illusion of the perespective and the Depth of field. (corrected in SE) Like this so, these gantry ways should look. Maybe with some new mattes?
-Angel