@walter-stein Cool photos from South Dakota! It looks a lot like eastern Montana, where I did a week’s worth of fossil collecting with Montana State for one of my masters’ classes. I love it out there! I’m curious–what’s going on in the 5th picture (Screen-Shot-2016-05-15-at-1.32.50-AM.png)? What you’re sitting in front of sort of looks like a skeleton of a sluice box, similar to what I’ve seen use for gold panning? And are you marking coordinates in the field book?