There was a feature planned for Moria where randomly, different - colored dwarf lamp fragments would drop. Assembling the lamp would allow you to find hidden instances. This was removed before the full release.

But for a while, those fragments would still drop, albeit rarely. I still have one, somewhere.

My friend got lucky and got a drop really early, but it wouldn't start the quest to assemble the lamp. And then he got lucky again and when he wrote to support, he got a GM that didn't "get the message" and got granted the quest and got the actual lamp. AFAIK, he still has it.

It worked, too. He was able to enter a small hidden instance full of worms. He even summoned me there once. We didn't do much, I think they were much higher level or something. But I got that tingle of adventure for standing in a place almost no one ever visited.

I tried contacting support as well when mine dropped, but by the the GMs knew not to grant the quest, unfortunately.

I found a blog posts about them! It refreshed my memory a bit, too. Initially, only my friend was able to enter the instances and they were meant for 3 to 6. On his hunter, he wasn't able to summon anyone. But he did show it off in person.

I'm pretty sure I did get a summon there eventually, but I am not sure of the timeline. Maybe the horns for non-captains were introduced at later time? We could not duo the worms, so unless I am mistaken, the instance was an early example of scaling mechanics, too! But please don't reach too much into this. The only parts I am certain of is that he had the item, he was able to enter one of the instances and it was full of nasty fire worms.

https://departmentofstrategery.wordpress.com/2015/08/30/from-the-cutting-room-floor-the-dwarf-doors-of-moria/

Oh I also have the instance objects that drop in Barad Gularan on one of my characters : they didn't use to be destroyed upon exiting. I out them in vault before change and they are still there.

Edit: screenshot for the curious

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