There is a huge village in the center of the Earth, and believe it or not it’s actually hidden in the hottest area of the very core of the Earth’s crust. The reason why it has been so easy to keep a whole village there is because we have access to alien materials that are resistant to the hottest or coldest temperatures imaginable. Even melting hot lava would never be able to affect the villagers inside because they live in an environment protected by materials that are completely unknown on Earth.
We managed to get them in there and we won’t be exposing them to the outside world until they are fully evolved. We must report that they are much more intelligent than humans and they are a younger species. We have high hopes for that test subject. We might even use them to populate the exterior and leave humans out of the equation.