The Serpent Trench(蛇の道,Hebi no michi?, lit. "Snake Road") is a location in the game Final Fantasy VI. It is a rapid-moving underwater current that flows from Mobliz to Nikeah. Sabin, Cyan and Gau use a diving helmet to swim through the trench to Nikeah.
In the World of Ruin, the Serpent Trench still connects Mobliz and Nikeah, but due to the shifting of the world, it is now above water and is traversed on foot. The Cultists' Tower is situated on the Serpent Trench inside a ring of mountains.
In the World of Balance, the Serpent Trench uses its eponymous track as a background theme, but in the World of Ruin, since it has surfaced into the Overworld, the World of Ruin's overworld themes ("Dark World" and "Searching for Friends") are heard when traveling it instead.