Imagine a get together like Burning Man but instead of huge temporary art installations and the burning of the man, people gathered around a mega-structure and

Imagine a get together like Burning Man but instead of huge temporary art installations and the burning of the man, people gathered around a mega-structure and your sub-group gained status by adding to it. Bring a new blue stone to Stonehenge and get a bunch of other people to help you install it and you are the cool in-group that year.