I wanted to post about playground hills today. Almost every person I talk to wants a hill in their learning landscape, with an embankment slide of course. It is kind of a trademark of natural play. Most folks picture a grass hill that is perpetually green and mowed (by someone else ;). But, most of these spaces will get a low level of maintenance and the hill is likely to turn into dirt and mud at the top and on the sides of the slide from all of the excited foot traffic. I want to encourage…