I've gone thru way deeper stuff than this, but nothing this thick ever. I wouldn't even call it mud, it acted more like cement or liquid rock. once the frame touched the surface, there was no rocking or moving this thing what so ever. I thought i might end up breaking the steering system just from trying to winch it out.
you could grab a clump of this mud, pack it like a snowball, and throw it without it falling apart.
it looked like just moist dirt at first, but then it started to sink and I thought there's got to be a bottom, but nope, it was too late. tryed spinning the tires to clear out the mud, but it wouldn't detacth from the tire