Great Wall of China

Wow! The Great Wall of China is one amazing piece of fortification. It makes me wonder about those Mongolians. For anyone to be so cautious of another people that they build a wall thousands of kilometers long....well.... I imagine the Mongolians partied like rock stars and were mean when they have a hangovers.
We had a great day that climaxed for me with a stroll down a wall that has been in my list of 'must sees' for years.
The wall is truly a great achievement. As you can see the mountains are steep and jagged and this fence winds it's way along the ridges for as long as the eye can see. Can you imagine being a Mongolian, out for your monthly raid and seeing a wall where there once was trees? Could ruin any good ransacking.
Now hundreds of years later, I think it would make a great motorcross, bmx or skate course. Perhaps a stop on the formula one of street luge.
Factiod: One side of the Great Wall is taller than the other. The side facing Mongolia is about 2 feet higher than the side facing Beijing.