This trail at the Razorback Regional Greenway in Northwest Arkansas–along with every other trail in the world–is dangerous when underwater.
Trails are also dangerous when covered with poisonous snakes, loose sticks of dynamite, large rusty spikes, and giant spiders from the planet Xenon.
Where are the warnings for those dangers?
But maybe you’re unsure whether this warning is accurate. Maybe the trail is safe when underwater. Maybe the sign is exaggerating, prompting unnecessary fear and caution. Is it possible?
Nope, guess not.