Night Fury Caves

The Night Fury Caves is a place first featured in How To Train Your Dragon: Dragons' Return (The fourth installment in the How To Train Your Dragon Franchise [which is another idea wiki I made] )
The Night Fury caves can be found deep in the Hidden World where Night furies roam. Most of the Night furies have been hunted down, killed, or found out of the Hidden World, but the remaining Night furies alive roam in the caves. Over thousands of Night Furies and Light Furies Alike roam down in these caves, never to be found by humans, that is, till now. A legend supposedly made by the dragons says that there is one special Night Fury that is the only Alpha Night Fury in existence (That being, Toothless of course) and shall be king of the Night furies.
OTHER INFO:
* Toothless finds his first Night fury friend in the Night fury caves, Known as Toothpick.
* The first night fury ever was born in the Night Fury Caves.
* Night furies are known for being rare and unique in the HTTYD Franchise, that being because Night Furies prefer to live in the Hidden World, Specifically in The Night fury caves, which is extremely hard to find in the Hidden World, Most of the night furies have left the Hidden World, and the ones who did where killed by dragon hunters, and most of them killed Specifically by Grimmel (Except for Toothless). 
* Before most of the night furies left the Hidden World and died, there were approximately 70,000 and more Night furies ever in existence, most of them born in the night fury caves.