Fun story for the credulous.
13,000ft above sea level.
That means it requires a 13,000 foot deep flood. A back of the envelope calculation shows (assuming I didn't miss a decimal) that this requires 2 BILLION cubic kilometers of water.
The total volume of sea water on Earth is ~1.37 billion km^3. So this is in addition to that. The total ice volume is usually given as around 30 MILLION km^3.
So the BS flood concept requires a doubling or trebling of Earth's water supply, which then also vanishes.
Morons.