I'd say that photo and a funny text works much better for warning drivers opposed to information about it's precise dimensions and weight.
For the most charitable reading, that could be a tongue-in-cheek response to someone calling in a large boulder blocking said highway. They arrive and find that the "large" boulder is actually not quite so large.
General rules:
Exceptions may be made at the discretion of the mods.
I'd say that photo and a funny text works much better for warning drivers opposed to information about it's precise dimensions and weight.
For the most charitable reading, that could be a tongue-in-cheek response to someone calling in a large boulder blocking said highway. They arrive and find that the "large" boulder is actually not quite so large.