Key Information
Aconcagua
| Type | Extinct Stratovolcano and Mountain |
| Highest Point | 22,858 ft |
| Discovered | Before 1500 CE |
| Age | 8 to 10 million years ago |
Learning Point
- Aconcagua in the Argentinian Andes is the highest peak in the Western Hemisphere and the tallest mountain outside of Asia. Often called the “Stone Sentinel,” it’s the ultimate “final boss” for hikers because it’s a non-technical climb—meaning you don’t need ropes or axes, just massive amounts of grit. Even without the gear, the freezing winds and thin air make it a brutal test of endurance and a legendary member of the Seven Summits. It’s the highest point on Earth where you can stand without being a professional mountaineer, offering epic views.
Project
- Draw a picture of yourself and your friends carefully climbing Aconcagua.
- Overview
- Route to Top

Location
| Location | Principal Cordillera, Andes, Mendoza, Argentina |
Fun Facts
- Its name comes from the ancient Quechua language and means “Stone Sentinel.” It stands like a giant guard watching over the Andes Mountains in Argentina.
- In 1985, hikers found a 500-year-old Inca mummy high up on the mountain. Because it is so cold and dry at the top, the mummy was perfectly preserved in the ice like a time capsule.
- Since there are no roads for trucks, climbers use mules to carry their heavy gear. These tough, donkey-like animals are the “mountain taxis” that help people get their supplies to base camp.
- In 2013, a 9-year-old boy named Tyler Armstrong reached the very top. He became the youngest person ever to summit the mountain, proving you don’t have to be a grown-up to do big things!
Past Lessons
| 181 | January 5, 2026 | (North America) |
