The Underground World

The Underground World, also known as The Underground, is a location that was shown in Godzilla: Lord of the Galaxy.

It is an ancient subterranean ecosystem deep within the Earth, and also a home to all known Earth Titans. A lot of tunnels and caves across the planet lead to this world. The ecosystem continually radiates radioactive energy, allowing the plants and creatures that inhabit it to evolve to titanic sizes. The radiation level in The Underground is deadly for humans, and it's too high even for the drones, which explains why even the EDF doesn't know how it looks like, and what kind of creatures may live in there.

The terrain of the Underground World is similar to a gigantic cavern. It also has a lot of biomes, like lava oceans, crystal caverns, forests, rivers, mountains, plains and more. The flora of this world is highly radioactive and emits light, which is one of main light sources, along with crystals and lava.

Trivia

 * The main inspiration for The Underground was Hollow Earth from MonsterVerse. At the time when Underground was added to LordVerse, there was no official depiction or description of Hollow Earth, so DinoMania came up with her own version of it. Underground World was also inspired by the Hidden World from How To Train Your Dragon series, The Nether from Minecraft and Dinosaur World from Ice Age series.