Ross Martin, 60HzShuffle, agvogel, Paul.K, billsamuels, and keep clicking, thanks for your comments!
agvogel asked about focal length on "Layers, Sunset Dunes" and "Last Light, Sand Dunes." Both were made with very long focal lengths — perhaps unusually long for landscape by some reckonings. "Layers, Sunset Dunes" was shot at 400mm and "Last Light, Sand Dunes" was at 300mm.
I'm partial to longer focal lengths for landscape photography. While I carry and occasionally use lenses as wide as 16mm, my most used landscape lens is probably a 70-200mm, and I frequently use the 100-400mm when conditions and the image call for it. Death Valley can be one of those places, partially due to the immense distances that are common there and also because I often like to "excerpt" small sections of the larger landscape in my compositions. (I wrote a bit more about those choices in a comment in the post containing the first set of images from this trip.)
billsamuels, March is often a pretty good time for Death Valley, especially in years with a bit more moisture, as you can get some wildflowers. I'm not sure how that's going to play out this year — there was some decent rain earlier in the season, but then things dried up a lot. We'll be there at the end of March again, too.
Again, thanks!
Dan