Board Thread:MHX General Discussion/@comment-4969421-20151109154146/@comment-27188811-20151110192734

@BlastRebellion well, you do see the Dual Blader drop down before it teases the boss. It could be just a jumping unsheathing, but I'm guessing that it probably has to do with how you enter the arena. I think that it might be a series of caverns connecting to the surface, but considering how endgame bosses usually are in Monster Hunter, it might just be that you exit base camp, and drop down into the cavern.