The evolutionary biologist and author of The God Delusion, who stepped down from his post at Oxford University last year, has subsidised the five-day camp in Somerset.
Camp-goers will be given lessons in rational scepticism, as well as sessions in moral philosophy and evolutionary biology.
There will be more familiar camp activities such as trekking, tug-of-war, canoeing and swimming but children will also be taught to disprove phenomena such as crop circles and telepathy.
The retreat is for children aged eight to 17 and will rival traditional faith-based breaks run by the Scouts and church groups. It will teach that religious belief and doctrines can prevent ethical and moral behaviour.
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