Campers are told that two unicorns live in the area and cannot be seen, heard or touched. The adult councillors pretend to believe in the unicorns on the basis that an ancient book handed down through the generations says they exist. The children are encouraged to try to prove that the unicorns do not exist. If anyone is successful they will be awarded a £10 note which has a picture of Charles Darwin on it and is signed by leading atheist academic Richard Dawkins.

In the US the prize is a “godless” $100 bill from before 1957, which was when the US placed the phrase “In God We Trust” on all its notes. No child has definitively disproved the existence of unicorns and won the prize. “The idea of the unicorn debate is not to prove God doesn’t exist, it is to illustrate that having such debates with religious people is futile because in the end faith trumps everything,” said Miss Stein.