Well, no . . . the terrain isn’t slow moving. It’s terrain. It exists without moving except via tectonics or rock slides or what have you.
It’s not the terrain, but rather the progress through it that’s slow moving. (This is the kind of thing I’ll come back to later. No need to leave myself a note; it’s clearly problematic.)
@[email protected] @[email protected] Next time I’m in an earthquake (or an avalanche*), I’ll have to remember to describe it† as “quick-moving terrain”. That’d be fun phrasing!
† Probably not until after the fact, when I’m telling the story. Always assuming I survive, of course.