Fred has been working on his model train, and I had to show you what he is creating!
A Lake and River!
It will be appear deep because Fred is painting the bottom a darker color than the river before he pours the final glue substance that will harden but appear like water.
This is a similar process that he did to create the waterfall.
Close up of the river after is was just carved.
Here is a better idea of how the lake and river join.