This is really cool! I like it a lot. The one comment I have is the same as one I had in another thread; because of the huge massive scale of the chamber, from the ground looking up at this angle the circularity of the vertical chamber wall would be distorted by perspective, meaning it would look more “pear” or “egg” shaped toward the top instead of round. However, for the purposes of illustration that might look odd or distracting, so feel free to ignore that!!
You might just want to try fisheye-ing your lens a little bit to get just a suggestion of that distortion.
Also, as Sasha says don’t forget the atmospheric perspective! That will really give a great feeling of size and realism!