<Li> <P> "The First Mound"--at Jiayuguan, the western terminus </P> </Li> <P> "The First Mound"--at Jiayuguan, the western terminus </P> <Li> <P> The Great Wall of China at Badaling </P> </Li> <P> The Great Wall of China at Badaling </P>

What is the tallest part of the great wall of china