If you've never been to the Trona Pinnacles, here's a Google map centered on them. It's a large group of calcium carbonate (tufa) formations that were once under water.
Here's the BLM web site about them. About 10,000 to 100,000 years ago this was the bottom of the Searles Lake, which was about 600 feet deep.
You may recognize them because it's been used for location shooting for several movies and TV shows.