Here's a photo from a good ol' Thursday exploration with my friend Mike (of Copper Country Explorer fame) and his son. Last Thursday, we visited the Copper Falls Sands -- the extensive (I mean HUGE) field of absolutely barren crushed rock, where the Copper Falls mine deposited its unwanted tailings more than 100 years ago. This was once all swampland, but now it is covered to a depth of 10 or 20 feet by crushed up rock. A couple of streams run through it, cutting out small green swaths.
The sands are not only extensive, but downright sculpted. Here, Mike and his son ascend a small mountain of sands.