Not sure what type of foundation this is

Anyone know what type of foundation this is. Never saw anything like it. It’s like a masonry 2 x 6 wall. Thanks for any help!

PWF- Permanent Wood Foundation
https://www.southernpine.com/applications/permanent-wood-foundations/

It does look like PWF from here.

I was going under the assumption that he actually meant “It’s like a…”, and NOT actually IS!

Looks like a wood foundation with moisture problems.