Salt men aren’t what I was referring to. The cavernous ruins in China that I’ve seen pictures of hold huge temples, stairways, etc. hewn out of solid rock. Check out the pics.
That’s why I’d already posted this one:
http://www.freerepublic.com/focus/chat/3319171/posts?page=45#45
Turns out these are the correct YT links:
https://www.youtube.com/watch?v=7Tn-Y6Mt7HA
https://www.youtube.com/watch?v=kqDewaTvwfo