This is, in fact, a sand pattern from my favourite location for these. This particular beach has everything that helps to form such patterns freshly, twice every day, so each visit will be unique. A shallow sandy beach, a stream running through it and, most importantly, two colours of sand combine to create an enormous variety of patterns. Some of the most common patterns are formed by tiny rivulets on a receding tide, leaving behind what (with very little imagination) look like trees. Here I have simply used some washes of colour in the processing to further enhance the idea of a petrified forest.
Image size: 4674 x 3116, 10.08Mb | Camera details: Canon EOS 5D Mark II | Date uploaded: 28/07/2018