Final answer:
Stonehenge is the most famous Cromlech consisting of large stones arranged in a circular pattern on Salisbury Plain, England, with astronomical alignments.
Explanation:
Stonehenge is the most famous Cromlech, consisting of large stones arranged in a circular pattern on Salisbury Plain, England. These stones were placed to align with astronomical events like the summer solstice. Stonehenge's construction dates back to around 3000 BCE, making it a significant Neolithic monument.
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