This was captured at the South Tufa site on Mono Lake, a salt lake known for its tufa calcium carbonate rock formations that form underwater where springs bring calcium-rich water to the alkaline lake.
Captured at 0.8 second at f/16, ISO 50, 24mm. Three one stop bracketed exposures were adjusted in Adobe Lightroom then combined in Photomatix 6 HDR software.
It started raining as I walked to the shore of Mono Lake before dawn. I hadn't dressed for rain, so I almost turned around and headed back to my car. The rain shower didn't last long, and it's fortunate that I didn't leave, since the rain showers drifted out onto the lake and were lit up by the first rays of sunrise!