Something significant happened in Tandil, Argentina, on Feb. 29, 1912 — a 300-ton stone that had perched impossibly on the edge of a local hill suddenly tumbled to the bottom and broke into pieces.

Whether this happened due to vandalism or to blasting at a local quarry is unknown — there were no witnesses.

In 2007 the town replaced it with an exact replica. To date, it’s still there.