Overview and regional maps · 76–77
Chryse
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The flood that inundated the Chryse basin might have astonished even Noah. Muddy floodwater arrived through two channels, from the west and south. The depression was once an impact basin, gradually filled with sediment. The flood carved its bed into that sediment, leaving giant streamlined islands as a record. It finally slowed in the basin and the water seeped away. It has been dry ever since.