Can you believe this is here on earth? This pumice field in Argentina's Altiplano region was incredible! No-one was around except the few people I visited with and I felt like I was walking on the moon. I could've spent days meandering around on top of the rocks checking out their changing lines with the sun's different angles throughout the day. As I was venturing up a pumice slab I spotted these piles of black sand and was captivated by their lines and shadows.