When strolling down the beach, there’s always an urge to draw in the sand – it seems compulsory to make your mark by inscribing something. But there’s a dilemma: how do you go about ...

Beautiful gypsum sand dune scenery at White Sands National Park from Alkali Flats Trail. As far back as 22,000 years ago, humans may have improvised makeshift transportation tools that left grooves ...