Obviously religious
Clearly a place of worship erected by the Clangers (who have taken Philae down into their underground caverns where it is now used to store the soup)
The European Space Agency (ESA) has released images of what it's cautiously calling "an unusual formation of boulders in the Aker region on the large lobe of Comet 67P/Churyumov-Gerasimenko ... reminiscent of so-called 'balancing rocks' on Earth." The three stones, depicted below, appear to be have a rather small footprint. So …
It's still a microgravity environment out there.. Those things could have gotten dislodged in an earlier solar pass, and landed back on the main body. You'd only need a little bit of melt of the ice from the kinetic energy to stick the rocks to the main body again. It's not as if there's huge forces or erosion at work there when the comet is not near the sun.
I very much doubt that the surface of the comet is water ice.. The comet is practically black..
I was thinking more about an unholy mixture of methane, ammonia, carbon mono/dioxide, hydrogen cyanide, and possibly assorted complex carbohydrates/sulfur compounds thrown in. Makes for a very sticky mess when half-melted, and at seriously lower temperatures than pure water would even budge.
Hmm. Having studied this for some time I conclude that they are not 'balancing rocks' as that's just silly.
As the article says the 'objects' are hard to identify, but I think they are actually three ramblers who've sat down for a rest after getting lost just outside Newcastle. The proof is that the trodden path is obvious to their right ...
I would posit that those may be all part of the same connected hunk of rock, but just had sections eroded out over time making it appear as three boulders (Say passing through a particle cloud a couple times, but the particles are deflected at different angles as the front end of the comet gets worn down)