diff --git a/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldGeneration.java b/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldGeneration.java
index 8e962f4..c8d36c7 100644
--- a/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldGeneration.java
+++ b/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldGeneration.java
@@ -7,8 +7,11 @@ import net.cmr.jurassicrevived.entity.ModEntities;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.tags.BiomeTags;
+import net.minecraft.tags.TagKey;
 import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.entity.MobCategory;
+import net.minecraft.world.level.biome.Biome;
+import net.minecraft.world.level.biome.Biomes;
 import net.minecraft.world.level.biome.MobSpawnSettings;
 import net.minecraft.world.level.levelgen.GenerationStep;
 import net.minecraft.world.level.levelgen.placement.PlacedFeature;
@@ -21,7 +24,11 @@ public class ModWorldGeneration {
 
 	public static void generateWorldGen() {
 		for (ModWorldgenDefinitions.OreDefinition ore : ModWorldgenDefinitions.ORES) {
-			addOverworldOre(ore.placedFeatureKey());
+			if (ore.name().equals("permafrost")) {
+				addSurfaceModification(ore.placedFeatureKey(), ore.biomeTag());
+			} else {
+				addUndergroundOre(ore.placedFeatureKey(), ore.biomeTag());
+			}
 		}
 
 		Constants.LOG.info("Natural dinosaur spawning config loaded as: {}", JRConfigManager.get().naturallySpawning);
@@ -34,11 +41,19 @@ public class ModWorldGeneration {
 		}
 	}
 
-	private static void addOverworldOre(ResourceKey<PlacedFeature> placedFeature) {
+	private static void addUndergroundOre(ResourceKey<PlacedFeature> placedFeature, TagKey<Biome> biomeTag) {
 		BiomeModifications.addProperties(
-			context -> context.hasTag(BiomeTags.IS_OVERWORLD),
+			context -> context.hasTag(biomeTag),
 			(context, properties) -> properties.getGenerationProperties()
-				.addFeature(GenerationStep.Decoration.UNDERGROUND_ORES, placedFeature)
+				.addFeature(GenerationStep.Decoration.LOCAL_MODIFICATIONS, placedFeature)
+		);
+	}
+
+	private static void addSurfaceModification(ResourceKey<PlacedFeature> placedFeature, TagKey<Biome> biomeTag) {
+		BiomeModifications.addProperties(
+			context -> context.hasTag(biomeTag),
+			(context, properties) -> properties.getGenerationProperties()
+				.addFeature(GenerationStep.Decoration.TOP_LAYER_MODIFICATION, placedFeature)
 		);
 	}
 
diff --git a/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldgenDefinitions.java b/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldgenDefinitions.java
index 7fb69fa..a118df9 100644
--- a/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldgenDefinitions.java
+++ b/common/src/main/java/net/cmr/jurassicrevived/worldgen/ModWorldgenDefinitions.java
@@ -1,16 +1,13 @@
 package net.cmr.jurassicrevived.worldgen;
 
-import dev.architectury.registry.registries.RegistrySupplier;
 import net.cmr.jurassicrevived.Constants;
 import net.cmr.jurassicrevived.block.ModBlocks;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.resources.ResourceKey;
-import net.minecraft.tags.BiomeTags; // <-- Add this import
+import net.minecraft.tags.BiomeTags;
 import net.minecraft.tags.BlockTags;
 import net.minecraft.tags.TagKey;
-import net.minecraft.world.food.FoodProperties;
-import net.minecraft.world.item.Item;
-import net.minecraft.world.level.biome.Biome; // <-- Add this import
+import net.minecraft.world.level.biome.Biome;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.levelgen.feature.ConfiguredFeature;
 import net.minecraft.world.level.levelgen.placement.PlacedFeature;
@@ -33,7 +30,7 @@ public final class ModWorldgenDefinitions {
 			20,
 			32,
 			64,
-			BiomeTags.IS_OVERWORLD // <-- Add biome tag
+			BiomeTags.IS_OVERWORLD
 		),
 		new OreDefinition(
 			"stone_fossil",
@@ -75,15 +72,14 @@ public final class ModWorldgenDefinitions {
 			0,
 			BiomeTags.IS_OVERWORLD
 		),
-		// Add your new Permafrost generation here!
 		new OreDefinition(
 			"permafrost",
 			ModBlocks.PERMAFROST,
 			BlockTags.DIRT,
-			16, // Vein Size
-			6,  // Count
-			60, // Min Y
-			140,// Max Y
+			8,
+			3,
+			60,
+			140,
 			SNOWY_BIOMES
 		)
 	);
@@ -96,7 +92,7 @@ public final class ModWorldgenDefinitions {
 		int count,
 		int minY,
 		int maxY,
-		TagKey<Biome> biomeTag // <-- Add this to the record
+		TagKey<Biome> biomeTag
 	) {
 		public ResourceKey<ConfiguredFeature<?, ?>> configuredFeatureKey() {
 			return ResourceKey.create(Registries.CONFIGURED_FEATURE, Constants.rl(name));