Hawzen/I-found-a-seashell-in-the-middle-of-the-desert

420 best points · 111 comments · 2 Hacker News posts · 192 GitHub stars · View on GitHub

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I found a seashell in the middle of the desert To my amazement, I found a fully solid rock that eerily resembles a seashell at the base of a cliff in the Alghat desert, Saudi Arabia. I didn't know what to make of it at first, it had the swirls and shape of a seashell but was fully a rock, more importantly, it *shouldn't* be here; the nearest coastline is Dammam's, 500 km away. This looks impossible Carbonate rocks (e.g. limestone), marine fossils, coral fossils, and sedimentary structures (like ripples or bioturbation) all exist in and around Alghat, which points to the fact that parts of the Arabian Peninsula were once submerged under the sea.

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I found a seashell in the middle of the desert (420 points, 110 comments, by Hawzen, 2026-05-29)
I found a seashell in the middle of the desert (3 points, 1 comments, by SVI, 2026-05-31)

Hawzen/I-found-a-seashell-in-the-middle-of-the-desert

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