What did the Port Royal quake do to the ground?

In Loudon’s account of the 1692 earthquake, houses on one side of Port Royal’s principal street sank into a gulf, and water rushed up where they had stood^[1]. On the other side, the ground rose and fell “like the waves of the sea,” lifting houses before they tumbled into heaps^[2]. She also recounts a street cracking along its length and openings in the earth closing around people trying to escape. Her description makes the ground itself, not only the buildings, the source of danger^[3].

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