Talk:Soul of Light/@comment-26344606-20150501211837/@comment-24821572-20150502170917

> Wiki says "underground"

> Does it on the surface anyway

> Finds out it doesn't work

> Still question the wiki's info

Strange train of thoughts, if you ask me.

Yes, the souls of light/night will only drop from monsters killed in their underground biome, and you need to be at cavern layer at least(400ft underground). Hallow for light, crimson/corruption for night. I would suggest you create an artificial biome in the underworld. It should have a pretty high mob spawn rate.