It is an expression of the relationship between man and his fellow man, the river reflecting the cold distant sentiments between the two homosexuals, the bank, the obscurity and mis-information between them, the grass being the optimism of the future. The horizontal road represents the fact that they have had a contentious issue that has been vexing them and that they have drawn a line under it.
Finally the rocks on the river bank demonstrate what their relationship is founded on, the Rhine carrying 10000 years of Swiss and German shyte downstream which is what this response is meant to be, in buckets.
Can I have my 10% of the fee paid for writing this review?