QuickCheck: Could you walk from Kuala Lumpur to Kuching in the past?

The Sahul Shelf and the Sunda Shelf today. Both shelves were above sea level during the last ice age. The area in between is called 'Wallacea' after the Wallace line that divides fauna between the two regions. - CC BY-SA 3.0

FROM Atlantis to Hawaii, almost every culture has a story about a great flood that either sank a continent or a mythical island. However, here in South East Asia, our sunken continent is actually grounded in truth.