Not only did everyone seemed to enjoy the big crater debate, but there were also suggestions in the comments that more conundrums of this ilk might be make a fun companion for What on Google Earth (which I never seem to actually see before someone’s solved it nowadays – darn time zones). It’s worth a go, anyway, although it might take a while to get the format and level of difficulty right…
This week, I’m asking: what is the origin of the structures in this photo (click for a larger version)?
Let me know what you think in the comments.
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