That’s Yosemite Falls he’s talking about ... seen to the left on the Half Dome camera. There’s also Illilouette Fall, viewed on the trail going to the Vernal Fall footbridge.

Yosemite Falls (Lower and Upper ... Take in Half Dome, Vernal Falls, Nevada Falls, and Illilouette Falls without as much of a crowd as other well-known viewpoints like Glacier Point.