The Invention...

We took a wee walk out to the secret beach after my mid-day skate tasks were complete.

I found a few big logs that I managed to manoeuvre them into some sort of assemblance but the kids decided that they built it as some sort of invention after adding a stick or two to it.

Didn't quite catch what the invention does but they seemed to be co-ordinating it's usage rather coherently with each other.