Look for one of the three small ones around the big Northern one. None of the three were taken up on my server. Maybe they will now though as they are pointed out.
Neat I didn't know there was more than the big one in the North center area. That a tribe pillared the whole thing on the server I play. Just walking along the edges of the big on and a little up I found actually three rathole bubbles around it (at least one you point out in your vide). A tiny one, small one, then a medium sized one. The tiny one is above between the small and the medium. You can't miss the first two just going along the edge to the North left of where the ruins entrance is on the big one. All three where had not pillar/foundation'ed yet. All three if you build upwards look big enough to place everything including a fabricator, etc. Not sure what I will do with the medium one, maybe make a recovery base (I play PVE only).
Can you not bring any Dino’s down into the bubbles ? I’ve seen so many people say the crypods aren’t working is there any chance you could try it and confirm it for everyone? Please ? 🙏🏼🙃