diff --git a/src/main/java/com/github/halotroop/litecraft/types/block/Blocks.java b/src/main/java/com/github/halotroop/litecraft/types/block/Blocks.java
index 2b2d662..1d6774e 100644
--- a/src/main/java/com/github/halotroop/litecraft/types/block/Blocks.java
+++ b/src/main/java/com/github/halotroop/litecraft/types/block/Blocks.java
@@ -5,6 +5,7 @@ import com.github.halotroop.litecraft.types.block.Block.Properties;
 public final class Blocks
 {
 	public static final Block AIR = new Block(new Properties("air").visible(false));
+	public static final Block GRASS = new Block(new Properties("block/cubes/soil/grass/grass_top.png").canCaveCarve(true));
 	public static final Block DIRT = new Block("block/cubes/soil/dirt.png", new Properties("dirt").canCaveCarve(true));
 	public static final Block ANDESITE = new Block("block/cubes/stone/basic/andesite.png", new Properties("andesite").canCaveCarve(true));
 	public static final Block DIORITE = new Block("block/cubes/stone/basic/diorite.png", new Properties("diorite").canCaveCarve(true));
diff --git a/src/main/java/com/github/halotroop/litecraft/world/gen/CavesModifier.java b/src/main/java/com/github/halotroop/litecraft/world/gen/CavesModifier.java
index c9fe1cc..7a01a8c 100644
--- a/src/main/java/com/github/halotroop/litecraft/world/gen/CavesModifier.java
+++ b/src/main/java/com/github/halotroop/litecraft/world/gen/CavesModifier.java
@@ -22,6 +22,7 @@ public class CavesModifier implements WorldModifier, WorldGenConstants
 	@Override
 	public void modifyWorld(BlockAccess world, Random rand, int chunkStartX, int chunkStartY, int chunkStartZ)
 	{
+		for (int i = 0; i < 8; ++i) world.setBlock(chunkStartX + i, chunkStartY + i, chunkStartZ + i, Blocks.DIORITE);
 		final int subChunks = CHUNK_SIZE >> 2; // in 4x4x4 blocks
 
 		for (int subChunkX = 0; subChunkX < subChunks; subChunkX++)
@@ -37,14 +38,14 @@ public class CavesModifier implements WorldModifier, WorldGenConstants
 					int scOffsetY = subChunkY << 2; // sub chunk offset y
 					int scTotalY = scOffsetY + chunkStartY;
 					// calculate noise at each corner of the cube [lower|upper][south|north][west|east]
-					double noiseLSW = this.caveNoise.sample(subChunkX, subChunkY, subChunkZ); // base = lower south west
-					double noiseUSW = this.caveNoise.sample(subChunkX, subChunkY + 1, subChunkZ);
-					double noiseLNW = this.caveNoise.sample(subChunkX, subChunkY, subChunkZ + 1);
-					double noiseUNW = this.caveNoise.sample(subChunkX, subChunkY + 1, subChunkZ + 1);
-					double noiseLSE = this.caveNoise.sample(subChunkX + 1, subChunkY, subChunkZ);
-					double noiseUSE = this.caveNoise.sample(subChunkX + 1, subChunkY + 1, subChunkZ);
-					double noiseLNE = this.caveNoise.sample(subChunkX + 1, subChunkY, subChunkZ + 1);
-					double noiseUNE = this.caveNoise.sample(subChunkX + 1, subChunkY + 1, subChunkZ + 1);
+					double noiseLSW = this.caveNoise.sample(scTotalX, scTotalY, scTotalZ); // base = lower south west
+					double noiseUSW = this.caveNoise.sample(scTotalX, scTotalY + 4, scTotalZ);
+					double noiseLNW = this.caveNoise.sample(scTotalX, scTotalY, scTotalZ + 4);
+					double noiseUNW = this.caveNoise.sample(scTotalX, scTotalY + 4, scTotalZ + 4);
+					double noiseLSE = this.caveNoise.sample(scTotalX + 4, scTotalY, scTotalZ);
+					double noiseUSE = this.caveNoise.sample(scTotalX + 4, scTotalY + 4, scTotalZ);
+					double noiseLNE = this.caveNoise.sample(scTotalX + 4, scTotalY, scTotalZ + 4);
+					double noiseUNE = this.caveNoise.sample(scTotalX + 4, scTotalY + 4, scTotalZ + 4);
 					// calculate y lerp progresses
 					// lerp = low + progress * (high - low)
 					double ypSW = 0.25 * (noiseUSW - noiseLSW);
diff --git a/src/main/java/com/github/halotroop/litecraft/world/gen/EarthChunkGenerator.java b/src/main/java/com/github/halotroop/litecraft/world/gen/EarthChunkGenerator.java
index 204318d..24ee674 100644
--- a/src/main/java/com/github/halotroop/litecraft/world/gen/EarthChunkGenerator.java
+++ b/src/main/java/com/github/halotroop/litecraft/world/gen/EarthChunkGenerator.java
@@ -40,6 +40,8 @@ public class EarthChunkGenerator implements ChunkGenerator, WorldGenConstants
 						block = pickStone(rockNoise);
 					else if (totalY < height)
 						block = Blocks.DIRT;
+					else if (totalY == height)
+						block = Blocks.GRASS;
 					chunk.setBlock(x, y, z, block);
 				}
 			}