I'm still not sure what to make of this sentence I came across in my copy-editing work today:
Guests are given glowsticks to guide their way through the already freaky figures and dioramas—a gauntlet that’s pretty scary to run even with the lights on.
It's weird enough that it seems to be based on a metaphor mixing "run the gamut" (range, scale) and "throw down the gauntlet" (glove). But "a gauntlet that's scary to run"?
I changed it to "a course that's pretty scary to run." But it'll be a while before I'm confident about it ...