Weird Cave In The Canyon

http://imgur.com/a/3XYZV

Was stumbling for the wizard tower in marauder's due... when I found some ice cave in the canyon. It had a 40 block drop into water, then some parkour. At the end, there was a button and a 3x3 door. Nothing seemed to happen though.

Anyone know what this is? Deleted quest? The ??? quest? If this is the ??? quest, just delete the thread... but I don't think it is xD. I can post more and location if you want.

 

Looks like an unfinished Minidungeon. There's a fire minidungeon that appears similar in temperament to this close to the Thanos road.

 

Yeah, I've encountered some of these 'minidungeons'. Can't remember where they are, though.

 

For anyone who's interested, here are three of the elemental mini-dungeons that I have found:

581 28 -5060 - Belua the Unquenchable, Water Dungeon


636 54 -4720 - The Mammoth, Earth Dungeon


413 39 -5167 - The Earth Reborn, Fire Dungeon

I have yet to find the Air and Thunder dungeon, so they might not be made yet.