I must say this is the first time I've ever heard anything about the "hollow earth theory" and this supposed expedition.
I remember seeing ads in Popular Mechanics in the early 1960's selling books about Admiral Byrd's flight over the North Pole hole, the entrance to the hollow earth. We've come a long way since then - the Internet has brought us unlimited free nonsense.
Here's the thing. Have you ever tried to flatten out an orange peal in one piece?
Yes, I have. Since I was a kid, it's been a point of honour among my cousins to do it. You're in for a lot of ribbing if you can't.
For instance, Greenland in that map of yours is much bigger than it actually is.
There are lots of other projections besides Mercator that are accurate. All you'd have to do to really test the idea is to get an accurate map, say a sinusoidal projection with interuptions (much like an orange peel), cut out the continents and scotch-tape them together by the edges.
I've looked at your video and it's far from convincing. When two coastlines come close together, they are rotated out of view before you can see how well they fit. When they come around again, they fit miraculously but you can't tell if there's any overlap.
(The Mediterranean Sea is one obvious example that isn't explained by simple expansion.)
The answers are all there for you to read. Make sure it is the KJV. Read Genesis 1 and Job 38 If you cannot understand it, then ask God to open up your thinking, and you will get the answers one at a time.
The "answers" you are spouting are not from the KJV; they're from creationist websites.