diff --git a/VoxelEngine.Tests/WorldGen/BiomeTests.cs b/VoxelEngine.Tests/WorldGen/BiomeTests.cs
index acdfbaa..9942b17 100644
--- a/VoxelEngine.Tests/WorldGen/BiomeTests.cs
+++ b/VoxelEngine.Tests/WorldGen/BiomeTests.cs
@@ -20,8 +20,8 @@ public class BiomeTests
     {
         var blocks = new BlockRegistry();
         var biomes = new BiomeRegistry(42, blocks);
-        Assert.Equal("Stone", biomes.Mountains.TopBlock(70).Name);
-        Assert.Equal("Snow Block", biomes.Mountains.TopBlock(120).Name);
+        Assert.Equal("Stone", biomes.Mountains.TopBlock(200).Name);       // below snow line
+        Assert.Equal("Snow Block", biomes.Mountains.TopBlock(420).Name);  // above snow line (384)
     }
 
     [Fact]
diff --git a/VoxelEngine.Tests/WorldGen/TerrainSamplerTests.cs b/VoxelEngine.Tests/WorldGen/TerrainSamplerTests.cs
index 20beeea..b020a56 100644
--- a/VoxelEngine.Tests/WorldGen/TerrainSamplerTests.cs
+++ b/VoxelEngine.Tests/WorldGen/TerrainSamplerTests.cs
@@ -43,11 +43,11 @@ public class TerrainSamplerTests
         for (int x = -200; x < 200; x += 3)
         for (int z = -200; z < 200; z += 3)
         {
-            // The dense blur removes inter-biome cliffs (those would be 25+ blocks).
-            // Remaining deltas are rugged intra-Mountains ridged slopes (~9), which
-            // are intended terrain, not cliffs; 16 separates the two.
+            // The dense blur removes inter-biome cliffs. Remaining deltas are
+            // rugged intra-Mountains ridged slopes, now ~4x larger after the
+            // 128->512 rescale; 64 separates intended slopes from true cliffs.
             int dx = System.Math.Abs(sampler.HeightAt(x, z) - sampler.HeightAt(x + 1, z));
-            Assert.True(dx <= 16, $"height jump {dx} at ({x},{z})");
+            Assert.True(dx <= 64, $"height jump {dx} at ({x},{z})");
         }
     }
 }
diff --git a/World/WorldGen/Biomes/DesertBiome.cs b/World/WorldGen/Biomes/DesertBiome.cs
index 9cbc554..4f4c87f 100644
--- a/World/WorldGen/Biomes/DesertBiome.cs
+++ b/World/WorldGen/Biomes/DesertBiome.cs
@@ -18,8 +18,8 @@ public sealed class DesertBiome : IBiome
     }
 
     public float SampleHeight(NoiseSource noise, float worldX, float worldZ)
-        => WorldConstants.SeaLevel + 4f * noise.Continent(worldX, worldZ)
-                                   + 1.5f * this._detail.GetNoise(worldX, worldZ);
+        => WorldConstants.SeaLevel + 16f * noise.Continent(worldX, worldZ)
+                                   + 6f * this._detail.GetNoise(worldX, worldZ);
 
     public IBlock TopBlock(int worldY) => this.Surface.Top;
 }
diff --git a/World/WorldGen/Biomes/ForestBiome.cs b/World/WorldGen/Biomes/ForestBiome.cs
index 4dffead..96f31b8 100644
--- a/World/WorldGen/Biomes/ForestBiome.cs
+++ b/World/WorldGen/Biomes/ForestBiome.cs
@@ -18,8 +18,8 @@ public sealed class ForestBiome : IBiome
     }
 
     public float SampleHeight(NoiseSource noise, float worldX, float worldZ)
-        => WorldConstants.SeaLevel + 6f * noise.Continent(worldX, worldZ)
-                                   + 4f * this._detail.GetNoise(worldX, worldZ);
+        => WorldConstants.SeaLevel + 24f * noise.Continent(worldX, worldZ)
+                                   + 16f * this._detail.GetNoise(worldX, worldZ);
 
     public IBlock TopBlock(int worldY) => this.Surface.Top;
 }
diff --git a/World/WorldGen/Biomes/MountainsBiome.cs b/World/WorldGen/Biomes/MountainsBiome.cs
index 2737f94..d4610c8 100644
--- a/World/WorldGen/Biomes/MountainsBiome.cs
+++ b/World/WorldGen/Biomes/MountainsBiome.cs
@@ -4,7 +4,7 @@ namespace VoxelEngine.World.WorldGen.Biomes;
 
 public sealed class MountainsBiome : IBiome
 {
-    private const int SnowLine = 96;
+    private const int SnowLine = 384;
     private readonly FastNoiseLite _ridged;
     private readonly IBlock _stone;
     private readonly IBlock _snow;
@@ -25,8 +25,8 @@ public sealed class MountainsBiome : IBiome
     }
 
     public float SampleHeight(NoiseSource noise, float worldX, float worldZ)
-        => WorldConstants.SeaLevel + 10f * noise.Continent(worldX, worldZ)
-                                   + 45f * this._ridged.GetNoise(worldX, worldZ);
+        => WorldConstants.SeaLevel + 40f * noise.Continent(worldX, worldZ)
+                                   + 200f * this._ridged.GetNoise(worldX, worldZ);
 
     public IBlock TopBlock(int worldY) => worldY >= MountainsBiome.SnowLine ? this._snow : this._stone;
 }
diff --git a/World/WorldGen/Biomes/PlainsBiome.cs b/World/WorldGen/Biomes/PlainsBiome.cs
index 7ec1731..872db34 100644
--- a/World/WorldGen/Biomes/PlainsBiome.cs
+++ b/World/WorldGen/Biomes/PlainsBiome.cs
@@ -18,8 +18,8 @@ public sealed class PlainsBiome : IBiome
     }
 
     public float SampleHeight(NoiseSource noise, float worldX, float worldZ)
-        => WorldConstants.SeaLevel + 6f * noise.Continent(worldX, worldZ)
-                                   + 2f * this._detail.GetNoise(worldX, worldZ);
+        => WorldConstants.SeaLevel + 24f * noise.Continent(worldX, worldZ)
+                                   + 8f * this._detail.GetNoise(worldX, worldZ);
 
     public IBlock TopBlock(int worldY) => this.Surface.Top;
 }