This is a quick context render of this material:
It's mainly a cylinder with some noise applied and then a single PBR material applied for detail, with PN triangle tessellation and displacement. There is also some simple pillars and a human figure for scale (from Sketchfab by David Wigfors). I really wanted to play with fog in Toolbag too. As it's Christmas, you can have this material for free if you drop me a message in the comments!