4 year old Oskar worked with the clay to form it into a tall pile which he shaped into "a mountain".
"The animals live on the mountain," he told us. "It's a wildlife reserve."
He found sticks to embed into the clay. "These are the cannons," he decided. "These are to stop the bad guys from killing the animals."
To see the image in colour, click on my Flickr photostream link here.