'It averages a height of 25 feet for its length of more than 1,500 miles'
the Great Wall of China
25: It averages a height of 25 feet for its length of more than 1,500 miles
It averages a height of 25 feet for its length of more than 1,500 miles
It averages a height of 25 feet for its length of more than 1,500 miles
25
the Great Wall of China
25