Underground Caverns

The Underground Caverns are underground mines, located beneath King Papa's kingdom, where several miners, including Curdie, spend their lives in digging for the kingdom's wealth and financial resources. First appearing in the George MacDonald's novel, and the resulted animated film, The Princess and the Goblin, as one of the central locations, the caverns also feature an underground kingdom, known as The Goblin Kingdom, that serves as home and base of malevolent goblins, led by Prince Froglip. The caverns are also featured, in a minority, in the villain tournaments context, whenever Froglip addresses his goblin warriors in overtaking the human kingdoms, and imprison the humans, known as "Sun People", to their own grounds. Other that that, they do not serve another purpose, furthermore their state remains currently unknown.