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As the planet expanded
The innermost moon dipped lower and lower
Eventually, it grazed the surface
Mountains shattered
High plateaus were grooved
There came a time when it dived below the surface
Leaving mole-like ridges above its course
After a certain depth
No surface expression could be seen
Soon the people forgot
There had ever been a moon
It became a thing of legend, folktale, imagination
Until The next one was overtaken
By the planet in its turn