Bonneville Salt Flats

Here's yet another post from a place where the notion of beaches is a little fuzzy. The Bonneville Salt Flats are the floor of prehistoric Lake Bonneville. They are higher than the current extent of Great Salt Lake, but much lower than the prehistoric levels of Lake Bonneville. This is a pretty typical dry season view, but in wet periods the flats can flood with a very shallow layer of water, which may qualify the edge of the highway shoulder as a shoreline of some sort. Maybe with wave action, the gravelly shoulder of the road is actually a beach.

AERIAL VIEW

If you look carefully at this photo, you can find a distinct Lake Bonneville shoreline on the mountain slope in the background.

For another shot of Lake Bonneville's shorelines, you might check this post on Gravel Beach:
Lake Bonneville: July 2007

And for more about Lake Bonneville's history and geography, look at this one over on hshipman:
Bear Lake: June 2012