Actually the dark side of the moon is one of my favorite local system destinations for conscious O.B.E.'s to - there's just So Much going on there! Almost everything is underground, but underground is this massive area with all sorts of different races of sentient Beings having 'neighborhoods'. I don't even have a feel for how big it is to be honest with you. Just the 12 story 'water works section with all the pipes which feed all the different neighborhoods hosting different races was like several football fields put together and then about 12 stories high.
I often take groups to the Dark Side of the moon and so there's a lot of collaboration - we're all literally seeing the same things.
One time we found sort of a movie theatre, only it was playing scenes from earth street camera's. No wonder we all feel watched! lol
Once we found these huge hydroponic bays filled like jungles with food producing plants, it was easily the size of 4 large industrial warehouses and and seemed to feed only one of two of the many races there.
For any O.B.E'ers out there who want to go check out the Dark Side of the Moon ET colonies, there is a large antenna on the surface - stay away from it, no idea what's going on with that thing but its super powerful and will suck you UP it and then spit you off the moon and then there's some sort of energy barrier and you can't get back on again until you do a separate trip.
A great entry point if you need an arrival zone is a glass dome which acts as a multi-species space observatory, it's very quiet and spacious and rather lovely, there's sitting bench's all around and hardly anyone comes into it to view the night sky so it's a great landing point - the steel doors lead to an elevator and the underground cities.
Anyway, I could go on and on about the dark side of the moon - and were I ambitious I'd upload photos of drawings of some of our trips. We always draw them immediately after returning before we discuss what was seen. Its amazing to see other saw it just as you did! Alas, I'm not ambitious enough