The spillway at Lake Berryessa, known as the “Morning Glory Hole,” was activated this week for the first time in six years. Chris Lee, the general manager of the Solano County Water Agency, told KCRA 3 that water began flowing into the passive spillway Tuesday at 6:15 p.m.

There’s really nothing like it. It’s a very odd-looking spillway that just disappears into the void. You almost have to see it.”