This looks cool, but it's not accurate. It's not natural=sand. See the bottom of Mapping Caveats: natural=sand#Mapping_caveats

Why? The node was in the center of the region, and now it's close to the eastern edge.

Whoops, I misread OSMCha and thought you were *adding* access=private.

Hey, most people hate tracing buildings. I've done a lot where Philly imagery bled over, but the quality is so bad on the public MontCo that it's definitely a pain.