[ExI] Ruins of Mars

[Adrian Tymes]

On Sun, Feb 2, 2025 at 12:40 PM Stuart LaForge via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> What are the chances that near perfect square under the sand with
> straight lines and corners are a natural phenomenon?
>

The specific one on Mars?  Close enough to 100%.
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