ok... you're talking about that line in the ice there? that's natural and the footy prints are some sorta critter, not LuLu... I have no idea what causes that line in the ice ---- at another area, down stream from this spot, there's a line that's much longer, twice as wide and very defined --- it happens every time the water starts to freeze. baffled as to what it is...

 Oh, I thought it was tire tracks, and LuLu tracks...my bad!

 I wasn't focused in on it but, this is that spot I was talking about with the line in the ice..

www.pinkbike.com/photo/11931899

 the line almost looks man-made it's so defined

 you can see it here too...

and look at the ice where it dips at the center of the photo --- you can see the line started there too.

www.pinkbike.com/photo/11931899

 we're supposed to have shitty weather tomorrow -- more snow --- if it ends up missing us.... I'll try to grab a close up of those lines in the ice.... maybe it's from the aliens that Al Gore has been talking about.

 Hahahahaha...that's probably it!