a guardrail carried away by tsunami onto this rice field
Sendai, MIyagi

Guardrail is a metonymy of road. Just like flower is nature and PC is information, guardrails usually tell us that there you can expect the transportation system named 'road'. So this white thing torn away onto the mud here looks like a miserable iron rail, but in fact it means that our whole idea of safety system was torn away on to the mud.