Genesis 8:4

And the ark rested in the seventh month, on the seventeenth day of the month, upon the mountains of Ararat.

Cross-reference

Genesis 7:17-19 describes waters rising to cover mountains — here the ark rests on those same mountains as the flood subsides.

Genesis 7:24 Historical context

Genesis 7:24 records the 150 days of floodwaters that directly precede this moment when the ark comes to rest.