“What is that?” L stopped and pointed. They had just passed through a swampy area and were on dry land once more, though it was obvious that they were approaching the sea.

“Nobody is quite sure,” J said. “It was put there many thousands of years ago by an ancient civilization. All of the landscape around here was formed and shaped by their hand.”

“It doesn’t seem possible that a primitive civilization would be able to move such a heavy stone. And carving the land seems beyond their basic skills.”

“No, no, this civilization was very advanced.”

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