https://www.pcgamer.com/the-story-of-half-life-remake-black-mesa/
I think I have read this before, but eh the big thing about this in my opinion is the xen concept art.
I remembered there is another purple concept in this article, is it not included?
Oh hey it’s the mushroom room from the very first Xen map!
I don’t think it is the mushroom room, look again. note the open area in the back with the ramp I think this is part of the factory level.
Although that could also be showing the large bony pillars in the area outside and the electrical arcs between them.
Love that art, it infuses Xen’s design with a cleaner, almost Gieger-esque feel to it.