A sunny day in June at the Tetons

The waters prevailed fifteen cubits upward, and the mountains were covered. Gen 7:20

During the time of Noah all the mountains were covered, ALL the mountains were covered, ALL land was submerged under water.  This was a global flood not a local flood.

Noah and his family were the only eight people that were saved. Did the people of the new testament believe this?  I think it is safe to say they did, just read this: to those who were disobedient long ago when God waited patiently in the days of Noah while the ark was being built. In it only a few people, eight in all, were saved through water,  and this water symbolizes baptism that now saves you also–not the removal of dirt from the body but the pledge of a clear conscience toward God. It saves you by the resurrection of Jesus Christ, 1 Peter 3:20-21 NKJV