WARNING

[As seen on a walk. Couldn’t get any closer.]

I like seeing this sort of notice. Some people might find it intrusive. To me, it’s a sign (sorry) that humans have been here. The (syntactically awkward) text reads

UNDERGROUND CABLE
BEFORE DIGGING TRENCHING OR
PUSHING PIPE IN THIS VICINITY
CALL BEFORE YOU DIG

Dug.

Related reading
All OCA signage posts (Pinboard)