This is great on so many levels! These kids were outside interacting with nature, creating, exercising, and working together. They were rewarded with an object of wonder and a story I'm sure they will pass on to their own children and grandchildren. Good for them!
The Midwest has yielded many Ice Age relics: bones of giant bison, mammoths, mastodons, giant beavers, stag moose, saber tooth cats, the list goes on. It is a safe bet there remain untold numbers of Ice Age treasures awaiting discovery. So kids, get outside and keep your eyes open. You never know what you might find!