Where is My Oxygen Mask?

Have you wondered what are the highest mountains in the world? You may have if you ever experienced hiking in high altitudes. It is hard to breath if you are not used to the altitude. The chart below shows the altitude at the highest point on every continent. These points are known as the Seven Summits. Some people make it a goal to hike to the top of each one of these! So interesting! 

Source posted by Julia