The video is about the stone city of Machu Picchu, located in Peru, which is a well-preserved remnant of the Inca civilization. The Inca people built Machu Picchu's palaces, temples, and infrastructure using only stone without the help of wheels or tools made of steel or iron. The stones of Machu Picchu were cut so precisely that they snugly fit together, and the site's engineering marvels have preserved its remarkable condition for over 500 years. Machu Picchu's purpose is still a mystery to many archeologists, but it remains one of the world's most important archeological sites.

Machu Picchu 101 | National Geographic

machu-picchu-101-national-geographic

Let's do English ESL basic listening: focus on hearing. The video is about the stone city of Machu Picchu, located in Peru, which is a well-preserved remnant of…