Speaking as a complete non-expert, I think that what we’re looking at here is a boundary between the low point of a small playa-like section of dried earth and a slightly higher area with black pebbles. The pebbles appear to be volcanic material from a nearby eruption that took place hundreds or thousands of years ago. (The particular feature may have erupted as recently as 800 years, though it has also possibly been longer.)
Continue reading A Boundary
I have walked past this place scores of times — it is along one of my regular walks. I walk almost daily, often along one of a group of familiar routes. It had been weeks since I last did this one, so it was time again to visit it. As I walked along a creek and past some commercial buildings I “saw” something that I have certainly seen before, but not really noticed — a great wall of ivy roots stretched across concrete.
Continue reading Ivy Roots
This is probably the classic notion of what a desert looks like — fields of wind-formed sand dunes stretching into the distance. In truth, such dunes typically cover only a very small fraction of the desert landscape. That’s certainly true in Death Valley National Park, where large, impressive dunes are only found in a handful of locations. We visited one of them on the final morning of our late February trip.
Continue reading Aeolian Bedforms
This photograph is a bit of an exercise in changing my perspective. If you were in Death Valley or other places where sand verbena grows and blooms, you might first notice a pinkish-purple color out on a gravel slope somewhere. Getting closer you would see large, sprawling individual plants with large pink-purple “flowers.” But a closer look reveals that these are actually globular clusters of many small flowers.
Continue reading Sand Verbena Flowers