I had worked on a couple of other files from this folder, but I just got around to post-processing this image 9-10 years later. Since RAW files have at most 12 to 14 bits of data, I adjusted three bracketed exposures in Adobe Lightroom Classic CC then combined them in Photomatix 6 to create a higher bit depth working file in 16-bit TIFF format. That result was then post-processed in Lightroom to deliver this result.
After a late night Mono Lake shoot in June 2011 I drove to the Buttermilks down in Bishop to shoot some more. But I arrived at 2am, and someone was parked right where I wanted to shoot! They were camping, so they'd be in the way for sunrise as well. I slept in.
The next night I went to the Alabama Hills and shot an arch under the stars. This was my dawn spot the next morning. There wasn't much color breaking through the clouds, but the morning light was great!