We saw this movie last Friday. A tiny black square thing was swallowed by a huge square thing. Mr Armstrong hinted that this movie has something to do with Russia and Czech Slovakia. Then, I pondered. I see, Russia has ruled over Czech Slovakia even since before it was Soviet. I wondered if the tiny thing represents Czech Slovakia and the huge one represents Russia, which,however, does not have anything to do with environments.
I finally think that the Clod represents the natural course of environment and life where anything,whether it is a tiny organism or a huge animal, lives.
In some way, the Clod might also hint at the cruel fact of nature that those that are weak are to continue to be sacrificed for those that are strong.