What is this particular song that is played a lot throughout the Chimera Ant arc? An example of the song being played is in episode 107, timecode 4:38. This is played a lot throughout this arc.

I am thinking that it could be an unknown track, as I can't find it in the soundtracks when searching through them.

Does anyone know what this song is called?
Assuming you're referring to the 2011 version of the series, the song you're looking for is called "Mystic Land"

https://youtu.be/YGmACxoYDjE?t=3760

The link I shared should link you to the song in question, as proof of my finding it.