Genesis8:5

Translation

And the waters became continually lacking until the heads of the mountains were seen on the tenth month, the first [day] in the tenth. (See comment below.)

Paraphrase

And the waters continued receding and on the first day of the tenth month [of the 600^th year of Noah’s life], the tops of other mountains could be seen. (See comment below.)

WHICH WERE THE FIRST MOUNTAINS TO COME INTO VIEW?

It took about two and half months (from the middle of the 7^th month, to the beginning of the 10^th month) for the tops of other mountains to appear. If the ark landed on Great Ararat with Little Ararat hidden from view, the next peaks that appeared as the waters receded were probably those of the Armenian Highlands.

Remember that there was much volcanic activity during that time and after it. Therefore, it is likely that the height of the Ararat peaks has changed and the height of the Armenian Highlands has changed since Noah’s time.