Isn't that weird! Never seen such strange lines in a large lochan before.

It looks similar to Jupiter's moon, Europa where there is a liquid ocean under an ice surface. I wonder if it's the same process going on?

I think it's caused by the Lochan monster going back and forth, trying to find a way out!

You may be onto something, John? I've heard loud cracking and creaking noises coming from frozen tarns. Something must be trying to get out ...