What's so Great about the Great Wall?

The Great wall?
What’s so ‘great’ about it?
After all
I have climbed the side of it

But, mountains tall
And I stepped every step of it
Through dynasties fall
There are miles and mil4e of it

Cloudy mountaintops
Million steps to the top of it
Bottomless drops
Dragons etched the path of it

still I can’t place
Why is it the Great Wall
When in two trips to China I scaled part of it
And at this pace
Let’s see, total it all
In another thousand five hundred trips, I’ll have scaled all of it