In case of flooding, use Stairmaster.
And put rescue workers out of a job. No Way!
RUN A GIANT!!!
The Mud slides effect will be better if you’re at the higher ground.
These signs went up in Colorado after an extremely nasty flash flood along the Big Thompson river canyon in July 1976. Something like 150 people were killed, a few of whom were never found, after a sudden heavy thunderstorm fell at the uphill end of the canyon. A 20-foot wall of water swept through all the little tourist-y stopping places along the way; on the other end of the canyon, most of the victims weren’t even getting much rain. They never saw it coming, and the ones who did hear a warning mostly tried to outrun the water in their cars. For many years afterward, sections of cars and cabins would appear in the stream.
So yeah, this sign is plenty serious, and the picture gets through to people in a way words didn’t in that flood.