- The world's largest drain is situated in Northern California.
- It's called the Morning Glory Spillway, or "The Glory Hole."
- It empties water from the Monticello Dam in Lake Berryessa to prevent flooding.
- Although it was built to empty water once every 50 years, severe weather has meant it's been used twice in the past two years, and four times in the last 22.
In the middle of the Monticello Dam in Lake Berryessa, Northern California, there's a massive drain hole. It's called the Morning Glory Spillway, but has also earned the affectionate nickname "The Glory Hole."