I believe the Great Pyramid was built to be the Bible in stone. The Egyptians did not build it. - Kent Hovind

Scientists and archaeologists have no clue how the ancients were able to excavate, let alone move such huge stones on such rough and uneven terrain. They cannot be moved by any combination of modern equipment today. Whole books have been written on speculation as to how they moved these massive stones. Many writers conclude that aliens must have visited earth and done this with technology about which we know nothing! Ahhhh?...there is a much simpler solution...Ancient man, especially pre-flood, and for a few hundred years post-flood, lived lots longer and accumulated lots more knowledge than we have today! No “Aliens” required!

Eight simple steps of what I think caused the Flood and explain all these strange phenomena on the planet. Then we'll go into a little bit more detail and then we'll close this down.
1. Noah and the animals got safely in the ark.
2. A 300 degree below zero ice meteor came flying toward the earth and broke up in space. As it was breaking up, some of the fragments got caught and became the rings around the planets. They made the craters on the Moon, the craters on some of the planets, and what was left over came down and splattered on top of the North and South pole.
3. This super cold snow fell on the poles mostly, burying the mammoths, standing up.
4. The dump of ice on the North and South pole cracked the crust of the earth releasing the fountains of the deep. The spreading ice caused the Ice Age effects. The glacier effects that we see. It buried the mammoths. It made the earth wobble around for a few thousand years. And it made the canopy collapse, which used to protect the earth. And it broke open the fountains of the deep.
5. During the first few months of the flood, the dead animals would settle out, and dead plants, and all get buried. They would become coal, if they were plants, and oil if they're animals. And those are still found today in huge graveyards. Fossils found in graveyards. Oil found in big pockets under the ground.
6. During the last few months of the flood, the unstable plates of the earth would shift around. Some places lifted up; other places sank down. That's going to form ocean basins and mountain ranges. And the runoff would cause incredible erosion like the Grand Canyon in a couple of weeks.
7. Over the next few hundred years, the ice caps would slowly melt back retreating to their current size. The added water from the ice melt would raise the ocean level creating what's called a continental shelf. It would also absorb carbon dioxide out of the atmosphere which allows for radiation to get in which is going to shorten people's life spans. And in the days of Peleg, it finally took affect.
8. The earth still today shows the effects of this devastating flood.

All these flat earth guys!... Here's the Hovind theory on the flat earth... I suspect, I do not know this, I just have a sneaking suspicion that some atheists someplace have got in a club together to say "Hey, let's start pushing this idea that the earth is flat, and let's see if the Christians fall for it." They've done that several times before over the last hundred years, spread some stupid idea and sometimes a lot of Christians do fall for it... And then they'll use that to sit around and laugh and say "Wow, look at how stupid these Bible-believers are!" I think this whole flat earth thing is another one of those.