Excuse me FFXV community, i was thinking of doing a speedrun of a specific dungeon, but without using that void creating ring. But i can't remember for the life of me what the dungeon was called or where it is. It's the dungeon that has ALOT of floors and you keep going down fighting multiple enemies each floor! Could y'all please tell me what the dungeon is?

costlemark tower i believe you are on about, it has the level 52 Jaberwock as the final boss, its a dinosaur type enemy and it drops a royal arm? if so it is Costlemark, it is in the Fallgrove area of Duscae, it looks like coliseum and the entrance is only accessible at nigh

@Etrostormborn12 I'm sorry I meant to respond sooner, but that's actually not the dungeon I was thinking about. I found out it was the Steyliff Grove Dungeon, the dungeon with 100 floors!

oh you mean the menace dungeons, there is one in most dungeons you need the secret key for them from a side quest where you are required to complete all the optional dungeons, search "A menace sleeps below" quest, this are the ones with a crap tons of floors and ye the final one has 100 floors