I was amused the first time I noticed these. I was really unsure about there purpose; there was little else to go on.
I spent many a moment walking past these bulky grey elephant look-a-likes and watched as the became weather worn.
They still tickle my sense of humour for no magical reason other than I have never seen anything go in or out of them. They could be for storage of other things.
What do you think?
The view from my eye alone 
Fantastic shot!
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