Reddit (posted three weeks ago):
One year ago we announced here that we buried a $10,000 treasure chest. Many hunters went searching and it was found in just 11 hours.
We did it again. It's located within 7 miles of San Francisco city hall, weighs more than 150 pounds, and is buried one foot deep.
Hopefully this one takes a little longer than 11 hours.
Edit: Update: The treasure is NOT on Angel Island or in Francisco Park.
Why are we saying this? Civic duty, mostly.
NYT:
[A student], 16, was sitting in his high school history class when his dad texted him a link to the hunt with two words: “It’s on!”
Soon, he had skipped school and was at the old U.S. Mint building at Fifth and Mission Streets, squirreling through a hole in the wrought iron fence and digging in the garden area. But a barefoot woman injecting herself with a hypodermic needle on the steps yelled that he was causing a disturbance, and he reconsidered.