When you go in to that stone structure and your right across from whos believed to be Johnny Cage and some say Goro but I only see two arms. With the pony tail kinda leads me to believe its Fujin, I dunno. Anways if you look down at the lava you can seea line in the lava right in the middle of where the stone structure is and the platform that holds the two fighters. It just looks like a glitch but then I thought about it theirs not other glitch like that in any of the other lava in netherrealm. Its just a line. Leads me to believe theirs a way to get over there and talk to these fighters. If one of them is Fujin then perhaps he his unlockable. Mabye thats what Raidens Staff is for give it Fujin to help increase his strenth in the nether realm and he beats Johnny Cage you unlock him or mabye then you fight him and unlock him. Its just weird that the only time i've seena glitch like that i the lava was leading to the platform fighters.