The county park that Kali and I frequent when it's too muddy to walk in our own backyard features a long, deep railroad cut through metamorphic gneiss. The cut is about twenty feet deep and about two hundred feet long - the longest and deepest cut on the entire line, which was built in 1876.
Perennial springs seep from the northern face of the cut, and the moist, rocky niches support hanging gardens of mosses and ferns. The recent cold weather utterly transformed the vertical landscape.