"Things You Wouldn't Know If We Didn't Blog Intermittently."
Actually, those are rocks. Water moves rocks all the time, and much bigger than these. Why do you think stream beds look the way they do?Here's some far bigger "holders" being moved:https://www.youtube.com/watch?v=51C7vEAVbxk
Tx, David. Text radically amended.
Water moves rocks, absolutely.But generally, they don't float. Isn't a lot of that ice?