In Zion National Park, along one easy riverside trail, there's a beach area full of rocks that are just BEGGING....nay, demanding....to be stacked.
And even though there are signs telling you not to stack the rocks, dozens of people stack the rocks every day with dazzling results. Very impressive. I was most admiring and just might have...mind you...might have but then again might not have stacked a few myself.....
The rangers come down every day or two and knock down all the creations, scattering the rocks around. Next day, people stack rocks. Rangers knock them down again. Rinse and repeat. Human nature is to build.