Okay kiddo, volcanoes are big mountains that can sometimes explode and shoot out hot rocks and lava. Some people like to climb to the top of these mountains, and there are seven special ones that are the highest volcanoes on different continents. They call them the volcanic seven summits.
There's one in Africa called Mount Kilimanjaro. It's the highest volcano in Africa and people have to climb up it for days because it's so tall.
Then there's one in Antarctica called Mount Sidley. It's in a really cold place and people have to use special snowmobiles and equipment to get there.
Next is one in Australia called Mount Giluwe. It's not as tall as some of the others but it's still a big climb.
In Europe, there's a volcano called Mount Elbrus in Russia. It's really tall and covered in snow too.
Over in North America, there's Denali, also known as Mount McKinley. It's in Alaska and people need to be really prepared to climb it because it can be dangerous.
In South America, there are two volcanoes that make up the volcanic seven summits. One is called Ojos del Salado which is in Chile and the other is Chimborazo in Ecuador.
All these volcanoes are really hard to climb and people need to be prepared and trained to do it. But for those who make it to the top, it's a really amazing accomplishment!