SPOILER Do You Recognize This Place?

https://imgur.com/a/pt4J49d

Was walking around corkus, found a strange empty cave with lots of ramifications and broken control panels. At the bottom of it there was some sort of engine with a small window showing inside. Upon clicking a stone button on the upper part of the "engine" a door opens leading into it. After walking past some cable rooms you find the big room with the robot shown in the pictures. Looks like an abandoned lab.

I really thought I found my third and last secret discovery for Corkus but apparently it didn't. Wondering if I missed something out in the lab room. Would appreciate if you share more information on this.

Spoiler: Cave Coords

-1500 -2400

 

If I’m gonna guess what your last discovery is heres a clue

Start on the Avos mountain

 

Something to add: Right before entering the cave there are some very annoying sounds, can't seem to find a mob so it's probably related with the cave. Something to lure the player in I'd say.

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I've been exploring all Corkus, I just have Avos left to explore right now, so that might be it. I'm also thinking about that weird lake just outside of the main city. There's even an NPC that hints something wrong is going on.

Spoiler: Secret Discoveries Found

Already found Relos Library and Avos Lost City

Trying to discover them for myself, clues are welcome, just don't spoil it entirely please :)

 

Your next discovery will take you on a magical treasure hunt throughout much of corkus, but don't forget to bring the feather!

 

you need golden avo feather and then you have to go to the avo village
i wont say more and also you get a cool item at the end

 

Hey that's my cave!

I think this is the fifth or sixth time I've ever seen someone post about this cave on here. I made it back in early 2017 but I forgot what the original request was, but if I'm not wrong, the request was to just make an "interesting" cave, so I went with the cliche hidden laboratory. The robotic hand (not an engine) containing the entrance was built by someone else whom I've regretfully forgotten their name, and the cool door opening animation was done by one of the command blockers back then whose name I can't recall either.