I can't find any Light Souls in the Underground Hallow.

[alcoholism]

In one world, my Hallow was very small, and the snow biome right next to it took up half of the underground area that belonged to the Hallow, so I couldn't get any Light Souls. So I made a new world and went straight to the Wall of Flesh, and after I defeated it a Hallow biome spawned, and when I went underground, I killed a ton of pixies and a few unicorns, andI didn't get a single Soul of Light.

[Diet Dr. Beta]

Hallow spreads through snow and Ice. My previous home was in an ice biome and the underground was all hallow. Plenty of souls of light.

[Bob of Mage]

How far down did you go? To get souls you have to go down a good ways before they will appear. If you are still seeing surface mobs than you clearly need to go deeper.

[alcoholism]

I read up on it and the wiki said I should be seeing pink and purple crystals, Do I need to kill stuff that spawns in the crystals?

[alcoholism]

So should I just go really close to the underworld then?

[alcoholism]

I'm starting to see illuminant slimes. Is that deep enough?

[Diet Dr. Beta]

About half-way to hell should be good. If you aren't seeing pink crystals, go surface-side and idle for a bit.

[Bob of Mage]

Souls should appear when the mobs change from the surface ones to the underground ones. After that as long as there's enough Hallow around you can go right to the depths of hell and find souls (of course ash doesn't change so it's rather hard to find souls outside the top of hell).

[Bob of Mage]

Originally posted by Needed Dispenser:

I'm starting to see illuminant slimes. Is that deep enough?

I think so.

[alcoholism]

I just got a Soul Of Light, so I think i'm deep enough. Thanks.

[alcoholism]

I'm starting to see the crystals, yet i'm in in an underground snow biome. I'm also finding illuminant slimes and bats. And I am close to the Hallow biome, But I find it strange how the crystals are appearing in a snowy biome.

[alcoholism]

I'm getting Souls of Light like there's no tomorrow. Thanks. Now I can fight the twins and get all of the Hallowed items.

[Bob of Mage]

Originally posted by Needed Dispenser:

I'm starting to see the crystals, yet i'm in in an underground snow biome. I'm also finding illuminant slimes and bats. And I am close to the Hallow biome, But I find it strange how the crystals are appearing in a snowy biome.

Ice can become "hallowed' and turns pink. Also it's not Hallow mobs that give souls but being in an area that is "Hallowed". In fact I've gotten souls in areas where I can't even see Hallow blocks. So if you hear Hallow music there's a good chance any mob you kill underground will give a Soul of Light. I've gotten Souls of Light from a Crimson mob in a Crimson zone due to so many Hallow blocks being right next to it.

[alcoholism]

Oh, thanks. The more you know I guess.

[Peaceful Panda]

I think you can stack up to 3 biomes. For instance I have an ocean farm that is jungle/hollow/crimson right now.

I got lots of souls of light/night from my hardmode dungeon as well, since the hollow/corruption is visible in parts.

[alcoholism]

Sounds cool. I should make some more worlds and see if I can get that to happen too. Thanks for all the info to guys, I appreciate it.