Death Valley's airy wilderness is furnished with tinted mudstone hills, wind-sculpted dunes, twisting canyons, snow-clad peaks, green oases, and table-flat stretches of sand and gravel, perhaps offering the greatest variety of scenery of any park. When conditions are right, the spring bloom of desert wildflowers can be outstanding. Death Valley is hot, so plan on going there from November through March during warm, blue-sky days and cool, starry nights.