Turns out those cute rock stacks you see on hiking trails—aka 'tourist warts'—are actually a big no-no! A local Icelandic guide says stacking rocks damages fragile landscapes, messes with wildlife, and can even destroy historic cairns. Some rangers are now fencing off areas to stop the trend. Next time you’re tempted to leave your mark, think twice—nature doesn’t need our souvenirs! #News #LeaveNoTrace #NatureLover