the upward mobility
Plummer’s Hollow, where I live, is cut into the northeast end of Brush Mountain, a typical long, low ridge in the folded Appalachians, raised above the valleys by differential erosion (and also shaped by periglacial processes during the Ice Ages). It would perhaps make more logical sense to talk of water’s downward mobility, but you know, I’ve looked at clouds from both sides now.
Photo taken from my front porch yesterday morning after the latest snowfall. I’m not sure what the name of this Snapseed font is, but it’s perfect for achieving legibility against a busy background.