Video: Lake Cheko at the Tunguska blast site

Tunguska just never gets old, does it?  I came across this video a couple of years ago, Pre-Tusk, but it deserves a post.  Cheko looks a hell of a lot like a Carolina bay to me. David Kimble and Bob Kobres have done some great work demonstrating that bays tend to be associated with streams, much like Cheko.