diff --git a/Engine b/Engine
index 86578fa..148a59d 160000
--- a/Engine
+++ b/Engine
@@ -1 +1 @@
-Subproject commit 86578fa35c0c296487d1aac675b55d4eb994cde7
+Subproject commit 148a59d8ec0f555e61b6e13526aedd3bc193d427
diff --git a/src/main/java/com/terraforged/api/biome/modifier/AbstractMaxHeightModifier.java b/src/main/java/com/terraforged/api/biome/modifier/AbstractMaxHeightModifier.java
index 5642e0f..c5cd9fc 100644
--- a/src/main/java/com/terraforged/api/biome/modifier/AbstractMaxHeightModifier.java
+++ b/src/main/java/com/terraforged/api/biome/modifier/AbstractMaxHeightModifier.java
@@ -27,9 +27,9 @@ package com.terraforged.api.biome.modifier;
 
 import com.terraforged.core.Seed;
 import com.terraforged.core.cell.Cell;
-import com.terraforged.world.climate.Climate;
 import com.terraforged.n2d.Module;
 import com.terraforged.n2d.Source;
+import com.terraforged.world.climate.Climate;
 import net.minecraft.world.biome.Biome;
 
 public abstract class AbstractMaxHeightModifier extends AbstractOffsetModifier {
diff --git a/src/main/java/com/terraforged/biome/map/SimpleBiomeMap.java b/src/main/java/com/terraforged/biome/map/SimpleBiomeMap.java
index 5bc437e..30a6b3c 100644
--- a/src/main/java/com/terraforged/biome/map/SimpleBiomeMap.java
+++ b/src/main/java/com/terraforged/biome/map/SimpleBiomeMap.java
@@ -8,10 +8,10 @@ import com.terraforged.biome.map.set.BiomeTypeSet;
 import com.terraforged.biome.map.set.RiverSet;
 import com.terraforged.biome.map.set.TemperatureSet;
 import com.terraforged.core.cell.Cell;
+import com.terraforged.n2d.util.NoiseUtil;
 import com.terraforged.world.biome.BiomeType;
 import com.terraforged.world.heightmap.Levels;
 import com.terraforged.world.terrain.TerrainType;
-import com.terraforged.n2d.util.NoiseUtil;
 import net.minecraft.world.biome.Biome;
 
 import java.util.Arrays;
diff --git a/src/main/java/com/terraforged/biome/map/set/BiomeSet.java b/src/main/java/com/terraforged/biome/map/set/BiomeSet.java
index ee41ccc..8f9716e 100644
--- a/src/main/java/com/terraforged/biome/map/set/BiomeSet.java
+++ b/src/main/java/com/terraforged/biome/map/set/BiomeSet.java
@@ -4,8 +4,8 @@ import com.google.gson.JsonElement;
 import com.terraforged.biome.map.defaults.DefaultBiome;
 import com.terraforged.biome.provider.BiomeHelper;
 import com.terraforged.core.cell.Cell;
-import com.terraforged.util.ListUtils;
 import com.terraforged.n2d.util.NoiseUtil;
+import com.terraforged.util.ListUtils;
 import net.minecraft.world.biome.Biome;
 
 import java.util.Collections;
diff --git a/src/main/java/com/terraforged/biome/modifier/AbstractMaxHeightModifier.java b/src/main/java/com/terraforged/biome/modifier/AbstractMaxHeightModifier.java
index 10d0880..34ffeb1 100644
--- a/src/main/java/com/terraforged/biome/modifier/AbstractMaxHeightModifier.java
+++ b/src/main/java/com/terraforged/biome/modifier/AbstractMaxHeightModifier.java
@@ -27,9 +27,9 @@ package com.terraforged.biome.modifier;
 
 import com.terraforged.core.Seed;
 import com.terraforged.core.cell.Cell;
-import com.terraforged.world.climate.Climate;
 import com.terraforged.n2d.Module;
 import com.terraforged.n2d.Source;
+import com.terraforged.world.climate.Climate;
 import net.minecraft.world.biome.Biome;
 
 public abstract class AbstractMaxHeightModifier extends AbstractOffsetModifier {
diff --git a/src/main/java/com/terraforged/biome/modifier/BeachModifier.java b/src/main/java/com/terraforged/biome/modifier/BeachModifier.java
index 325ff06..6d869fc 100644
--- a/src/main/java/com/terraforged/biome/modifier/BeachModifier.java
+++ b/src/main/java/com/terraforged/biome/modifier/BeachModifier.java
@@ -3,11 +3,11 @@ package com.terraforged.biome.modifier;
 import com.terraforged.api.biome.modifier.BiomeModifier;
 import com.terraforged.biome.map.BiomeMap;
 import com.terraforged.core.cell.Cell;
+import com.terraforged.n2d.Module;
+import com.terraforged.n2d.Source;
 import com.terraforged.world.GeneratorContext;
 import com.terraforged.world.biome.BiomeType;
 import com.terraforged.world.terrain.Terrains;
-import com.terraforged.n2d.Module;
-import com.terraforged.n2d.Source;
 import net.minecraft.world.biome.Biome;
 import net.minecraft.world.biome.Biomes;
 
diff --git a/src/main/java/com/terraforged/biome/provider/BiomeHelper.java b/src/main/java/com/terraforged/biome/provider/BiomeHelper.java
index fa43e6d..ec63de3 100644
--- a/src/main/java/com/terraforged/biome/provider/BiomeHelper.java
+++ b/src/main/java/com/terraforged/biome/provider/BiomeHelper.java
@@ -29,9 +29,9 @@ import com.terraforged.biome.ModBiomes;
 import com.terraforged.biome.map.BiomeMap;
 import com.terraforged.biome.map.BiomeMapBuilder;
 import com.terraforged.biome.map.BiomePredicate;
+import com.terraforged.n2d.util.Vec2f;
 import com.terraforged.world.biome.BiomeData;
 import com.terraforged.world.biome.BiomeType;
-import com.terraforged.n2d.util.Vec2f;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.biome.Biome;
 import net.minecraft.world.biome.Biomes;
diff --git a/src/main/java/com/terraforged/biome/surface/BriceSurface.java b/src/main/java/com/terraforged/biome/surface/BriceSurface.java
index 53e4fd0..2d35dc8 100644
--- a/src/main/java/com/terraforged/biome/surface/BriceSurface.java
+++ b/src/main/java/com/terraforged/biome/surface/BriceSurface.java
@@ -4,10 +4,10 @@ import com.terraforged.api.chunk.surface.Surface;
 import com.terraforged.api.chunk.surface.SurfaceContext;
 import com.terraforged.core.Seed;
 import com.terraforged.core.util.Variance;
-import com.terraforged.world.geology.Strata;
 import com.terraforged.n2d.Module;
 import com.terraforged.n2d.Source;
 import com.terraforged.n2d.util.NoiseUtil;
+import com.terraforged.world.geology.Strata;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 
diff --git a/src/main/java/com/terraforged/biome/surface/DunesSurface.java b/src/main/java/com/terraforged/biome/surface/DunesSurface.java
index 1c99d57..efd68e0 100644
--- a/src/main/java/com/terraforged/biome/surface/DunesSurface.java
+++ b/src/main/java/com/terraforged/biome/surface/DunesSurface.java
@@ -32,12 +32,12 @@ import com.terraforged.biome.provider.BiomeProvider;
 import com.terraforged.biome.provider.DesertBiomes;
 import com.terraforged.chunk.TerraContext;
 import com.terraforged.core.cell.Cell;
-import com.terraforged.world.heightmap.Levels;
-import com.terraforged.world.terrain.Terrains;
 import com.terraforged.n2d.Module;
 import com.terraforged.n2d.Source;
 import com.terraforged.n2d.func.CellFunc;
 import com.terraforged.n2d.util.NoiseUtil;
+import com.terraforged.world.heightmap.Levels;
+import com.terraforged.world.terrain.Terrains;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 import net.minecraft.util.math.BlockPos;
diff --git a/src/main/java/com/terraforged/biome/surface/ForestSurface.java b/src/main/java/com/terraforged/biome/surface/ForestSurface.java
index 81ee423..041914f 100644
--- a/src/main/java/com/terraforged/biome/surface/ForestSurface.java
+++ b/src/main/java/com/terraforged/biome/surface/ForestSurface.java
@@ -3,9 +3,9 @@ package com.terraforged.biome.surface;
 import com.terraforged.api.chunk.surface.Surface;
 import com.terraforged.api.chunk.surface.SurfaceContext;
 import com.terraforged.api.material.state.States;
-import com.terraforged.world.GeneratorContext;
 import com.terraforged.n2d.Module;
 import com.terraforged.n2d.Source;
+import com.terraforged.world.GeneratorContext;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 import net.minecraft.world.gen.Heightmap;
diff --git a/src/main/java/com/terraforged/biome/surface/IcebergsSurface.java b/src/main/java/com/terraforged/biome/surface/IcebergsSurface.java
index df0527c..05b6d87 100644
--- a/src/main/java/com/terraforged/biome/surface/IcebergsSurface.java
+++ b/src/main/java/com/terraforged/biome/surface/IcebergsSurface.java
@@ -30,10 +30,10 @@ import com.terraforged.api.chunk.surface.SurfaceContext;
 import com.terraforged.api.material.state.States;
 import com.terraforged.chunk.TerraContext;
 import com.terraforged.core.cell.Cell;
-import com.terraforged.world.heightmap.Levels;
 import com.terraforged.n2d.Module;
 import com.terraforged.n2d.Source;
 import com.terraforged.n2d.util.NoiseUtil;
+import com.terraforged.world.heightmap.Levels;
 import net.minecraft.block.BlockState;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.gen.surfacebuilders.SurfaceBuilder;
diff --git a/src/main/java/com/terraforged/feature/TerrainHelper.java b/src/main/java/com/terraforged/feature/TerrainHelper.java
index eb098f9..632cb75 100644
--- a/src/main/java/com/terraforged/feature/TerrainHelper.java
+++ b/src/main/java/com/terraforged/feature/TerrainHelper.java
@@ -26,11 +26,11 @@
 package com.terraforged.feature;
 
 import com.google.common.collect.ImmutableSet;
+import com.terraforged.n2d.util.NoiseUtil;
 import it.unimi.dsi.fastutil.longs.LongIterator;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import it.unimi.dsi.fastutil.objects.ObjectList;
 import it.unimi.dsi.fastutil.objects.ObjectListIterator;
-import com.terraforged.n2d.util.NoiseUtil;
 import net.minecraft.block.Blocks;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.ChunkPos;
diff --git a/src/main/java/com/terraforged/feature/feature/FreezeLayer.java b/src/main/java/com/terraforged/feature/feature/FreezeLayer.java
index 2db1f6d..946f988 100644
--- a/src/main/java/com/terraforged/feature/feature/FreezeLayer.java
+++ b/src/main/java/com/terraforged/feature/feature/FreezeLayer.java
@@ -3,6 +3,7 @@ package com.terraforged.feature.feature;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 import net.minecraft.block.SnowyDirtBlock;
+import net.minecraft.tags.BlockTags;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IWorld;
@@ -39,12 +40,12 @@ public class FreezeLayer extends Feature<NoFeatureConfig> {
                 pos2.setPos(pos1).move(Direction.DOWN, 1);
 
                 Biome biome = world.getBiome(pos1);
-                boolean freezesHere = freeze(world, biome, pos1, pos2, false);
+                boolean freezesHere = freeze(world, biome, pos1, pos2, false, false);
 
                 if (y1 != y2) {
                     pos1.setPos(x, y2, z);
                     pos2.setPos(pos1).move(Direction.DOWN, 1);
-                    freeze(world, biome, pos1, pos2, freezesHere);
+                    freeze(world, biome, pos1, pos2, freezesHere, true);
                 }
             }
         }
@@ -52,7 +53,7 @@ public class FreezeLayer extends Feature<NoFeatureConfig> {
         return true;
     }
 
-    private boolean freeze(IWorld world, Biome biome, BlockPos.Mutable top, BlockPos below, boolean force) {
+    private boolean freeze(IWorld world, Biome biome, BlockPos.Mutable top, BlockPos below, boolean force, boolean ground) {
         boolean hasFrozen = false;
         if (biome.doesWaterFreeze(world, below, false)) {
             world.setBlockState(below, Blocks.ICE.getDefaultState(), 2);
@@ -61,20 +62,39 @@ public class FreezeLayer extends Feature<NoFeatureConfig> {
 
         if (force || biome.doesSnowGenerate(world, top)) {
             hasFrozen = true;
-            world.setBlockState(top, Blocks.SNOW.getDefaultState(), 2);
-
-            // mark block below as snowy if supported
             BlockState stateUnder = world.getBlockState(below);
-            if (stateUnder.has(SnowyDirtBlock.SNOWY)) {
-                world.setBlockState(below, stateUnder.with(SnowyDirtBlock.SNOWY, true), 2);
+
+            if (stateUnder.getBlock() == Blocks.AIR) {
+                return false;
             }
 
-            // remove floating blocks above
-            top.move(Direction.UP, 1);
-            if (!world.isAirBlock(top)) {
-                world.setBlockState(top, Blocks.AIR.getDefaultState(), 2);
+            if (ground) {
+                if (BlockTags.LOGS.contains(stateUnder.getBlock())) {
+                    return false;
+                }
+
+                BlockState above = world.getBlockState(top.up());
+                if (BlockTags.LOGS.contains(above.getBlock()) || BlockTags.LEAVES.contains(above.getBlock())) {
+                    return false;
+                }
+
+                setSnow(world, top, below, stateUnder);
+
+                if (above.getBlock() != Blocks.AIR) {
+                    world.setBlockState(top, Blocks.AIR.getDefaultState(), 2);
+                }
+            } else {
+                setSnow(world, top, below, stateUnder);
             }
         }
         return hasFrozen;
     }
+
+    private void setSnow(IWorld world, BlockPos pos1, BlockPos pos2, BlockState below) {
+        world.setBlockState(pos1, Blocks.SNOW.getDefaultState(), 2);
+
+        if (below.has(SnowyDirtBlock.SNOWY)) {
+            world.setBlockState(pos2, below.with(SnowyDirtBlock.SNOWY, true), 2);
+        }
+    }
 }
diff --git a/src/main/java/com/terraforged/gui/preview/Preview.java b/src/main/java/com/terraforged/gui/preview/Preview.java
index e3d891b..45447ab 100644
--- a/src/main/java/com/terraforged/gui/preview/Preview.java
+++ b/src/main/java/com/terraforged/gui/preview/Preview.java
@@ -34,12 +34,12 @@ import com.terraforged.core.region.Region;
 import com.terraforged.core.region.Size;
 import com.terraforged.core.region.gen.RegionGenerator;
 import com.terraforged.core.settings.Settings;
+import com.terraforged.n2d.util.NoiseUtil;
 import com.terraforged.util.nbt.NBTHelper;
 import com.terraforged.world.GeneratorContext;
 import com.terraforged.world.continent.MutableVeci;
 import com.terraforged.world.heightmap.Levels;
 import com.terraforged.world.terrain.Terrains;
-import com.terraforged.n2d.util.NoiseUtil;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.AbstractGui;
 import net.minecraft.client.gui.FontRenderer;
diff --git a/src/main/java/com/terraforged/gui/preview/RenderMode.java b/src/main/java/com/terraforged/gui/preview/RenderMode.java
index dcb19cf..daafab3 100644
--- a/src/main/java/com/terraforged/gui/preview/RenderMode.java
+++ b/src/main/java/com/terraforged/gui/preview/RenderMode.java
@@ -26,8 +26,8 @@
 package com.terraforged.gui.preview;
 
 import com.terraforged.core.cell.Cell;
-import com.terraforged.world.heightmap.Levels;
 import com.terraforged.n2d.util.NoiseUtil;
+import com.terraforged.world.heightmap.Levels;
 
 import java.awt.*;
 
diff --git a/src/main/java/com/terraforged/material/geology/GeoGenerator.java b/src/main/java/com/terraforged/material/geology/GeoGenerator.java
index 4c6f2e3..d094abb 100644
--- a/src/main/java/com/terraforged/material/geology/GeoGenerator.java
+++ b/src/main/java/com/terraforged/material/geology/GeoGenerator.java
@@ -28,8 +28,8 @@ package com.terraforged.material.geology;
 import com.terraforged.api.material.geology.StrataConfig;
 import com.terraforged.api.material.geology.StrataGenerator;
 import com.terraforged.material.Materials;
-import com.terraforged.world.geology.Strata;
 import com.terraforged.n2d.Source;
+import com.terraforged.world.geology.Strata;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 
diff --git a/src/main/java/com/terraforged/material/geology/GeoManager.java b/src/main/java/com/terraforged/material/geology/GeoManager.java
index 0a8d59f..1288d5a 100644
--- a/src/main/java/com/terraforged/material/geology/GeoManager.java
+++ b/src/main/java/com/terraforged/material/geology/GeoManager.java
@@ -30,10 +30,10 @@ import com.terraforged.api.material.geology.StrataConfig;
 import com.terraforged.chunk.TerraContext;
 import com.terraforged.core.Seed;
 import com.terraforged.material.Materials;
-import com.terraforged.world.geology.Geology;
-import com.terraforged.world.geology.Strata;
 import com.terraforged.n2d.Module;
 import com.terraforged.n2d.Source;
+import com.terraforged.world.geology.Geology;
+import com.terraforged.world.geology.Strata;
 import net.minecraft.block.BlockState;
 import net.minecraft.world.biome.Biome;
 
diff --git a/src/main/java/com/terraforged/util/setup/SetupDebug.java b/src/main/java/com/terraforged/util/setup/SetupDebug.java
index 44b991a..ae09030 100644
--- a/src/main/java/com/terraforged/util/setup/SetupDebug.java
+++ b/src/main/java/com/terraforged/util/setup/SetupDebug.java
@@ -28,9 +28,9 @@ package com.terraforged.util.setup;
 import com.terraforged.Log;
 import com.terraforged.api.event.SetupEvent;
 import com.terraforged.core.Seed;
-import com.terraforged.world.geology.Strata;
 import com.terraforged.n2d.Source;
 import com.terraforged.n2d.source.Builder;
+import com.terraforged.world.geology.Strata;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 import net.minecraft.world.biome.Biomes;