Interesting cave layout

[Plantszaza]

I was watching DangerouslyFunny's video and notice some interesting cavern layout so I decided to share it with you.

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

The first picture is look like a Stardrop.
The second one is look like... Swastika.

There could be more but we can't see it all in one screen unless we use the zoom out.

[IRGAftermath]

Illuminati confirmed.

[Tim Timsen]

Those also appear in the normal mines.