diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/Chunk.java b/src/main/java/de/bixilon/minosoft/game/datatypes/Chunk.java
index 3226ca3ff..e8ca88f67 100644
--- a/src/main/java/de/bixilon/minosoft/game/datatypes/Chunk.java
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/Chunk.java
@@ -8,12 +8,11 @@ import java.util.HashMap;
 public class Chunk {
     private final HashMap<ChunkLocation, WorldBlock> blocks;
 
-    public Chunk() {
-        blocks = new HashMap<>();
+    public Chunk(HashMap<ChunkLocation, WorldBlock> blocks) {
+        this.blocks = blocks;
     }
 
     public WorldBlock getWorldBlock(ChunkLocation loc) {
-        //ToDo will return air if null
         return blocks.get(loc);
     }
 
diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/ChunkColumn.java b/src/main/java/de/bixilon/minosoft/game/datatypes/ChunkColumn.java
index c71f6fc55..ef0898239 100644
--- a/src/main/java/de/bixilon/minosoft/game/datatypes/ChunkColumn.java
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/ChunkColumn.java
@@ -1,5 +1,7 @@
 package de.bixilon.minosoft.game.datatypes;
 
+import de.bixilon.minosoft.game.datatypes.blocks.Blocks;
+
 import java.util.HashMap;
 
 /**
@@ -7,9 +9,13 @@ import java.util.HashMap;
  */
 public class ChunkColumn {
     private final HashMap<Byte, Chunk> chunks;
+    final int x;
+    final int z;
 
     public ChunkColumn(int x, int z) {
         chunks = new HashMap<>();
+        this.x = x;
+        this.z = z;
     }
 
     public WorldBlock getWorldBlock(byte x, short y, byte z) {
@@ -17,7 +23,14 @@ public class ChunkColumn {
             throw new IllegalArgumentException(String.format("Invalid chunk location %s %s %s", x, y, z));
         }
         byte heightNumber = (byte) (y / 16);
-        return chunks.get(heightNumber).getWorldBlock(x, (byte) (y - (heightNumber * 16)), z);
+        BlockPosition pos = new BlockPosition(this.x * 16 + x, y, this.z * 16 + z);
+        if (heightNumber == 0) {
+            return Blocks.getBlockInstance(Blocks.DIRT, pos);
+        } else {
+            return Blocks.getBlockInstance(Blocks.AIR, pos);
+        }
+        //ToDo
+        //return chunks.get(heightNumber).getWorldBlock(x, (byte) (y - (heightNumber * 16)), z);
     }
 
 }
diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/World.java b/src/main/java/de/bixilon/minosoft/game/datatypes/World.java
index 4a1298fdd..481eadd35 100644
--- a/src/main/java/de/bixilon/minosoft/game/datatypes/World.java
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/World.java
@@ -19,6 +19,8 @@ public class World {
     }
 
     public ChunkColumn getChunkColumn(ChunkColumnLocation loc) {
-        return chunks.get(loc);
+        return new ChunkColumn(loc.getX(), loc.getZ());
+        //ToDo
+        //return chunks.get(loc);
     }
 }
diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/WorldBlock.java b/src/main/java/de/bixilon/minosoft/game/datatypes/WorldBlock.java
index 6ab7dc1cd..71dd8b8ac 100644
--- a/src/main/java/de/bixilon/minosoft/game/datatypes/WorldBlock.java
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/WorldBlock.java
@@ -3,5 +3,6 @@ package de.bixilon.minosoft.game.datatypes;
 /**
  * Basically raw chunk stuff. This is not a block like dirt (it can be). Can be dirt, a flower, fire, torch, sapling, fluid (water/lava), nether wart, banner, ...
  */
-public class WorldBlock {
+public interface WorldBlock {
+    BlockPosition getBlockPosition();
 }
diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Air.java b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Air.java
new file mode 100644
index 000000000..e15902db7
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Air.java
@@ -0,0 +1,26 @@
+package de.bixilon.minosoft.game.datatypes.blocks;
+
+import de.bixilon.minosoft.game.datatypes.BlockPosition;
+
+public class Air implements Block {
+    final BlockPosition position;
+
+    public Air(BlockPosition position) {
+        this.position = position;
+    }
+
+    @Override
+    public BlockPosition getBlockPosition() {
+        return position;
+    }
+
+    @Override
+    public int getLegacyId() {
+        return 0;
+    }
+
+    @Override
+    public String getLegacyIdentifier() {
+        return "minecraft:air";
+    }
+}
diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Block.java b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Block.java
new file mode 100644
index 000000000..254f0062e
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Block.java
@@ -0,0 +1,11 @@
+package de.bixilon.minosoft.game.datatypes.blocks;
+
+import de.bixilon.minosoft.game.datatypes.WorldBlock;
+
+public interface Block extends WorldBlock {
+
+    String getLegacyIdentifier();
+
+    int getLegacyId();
+
+}
\ No newline at end of file
diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Blocks.java b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Blocks.java
new file mode 100644
index 000000000..e9c491245
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Blocks.java
@@ -0,0 +1,33 @@
+package de.bixilon.minosoft.game.datatypes.blocks;
+
+import de.bixilon.minosoft.game.datatypes.BlockPosition;
+
+import java.lang.reflect.InvocationTargetException;
+
+public enum Blocks {
+    DIRT(Dirt.class),
+    AIR(Air.class);
+
+    private final Class<? extends Block> clazz;
+
+    Blocks(Class<? extends Block> clazz) {
+        this.clazz = clazz;
+    }
+
+    public static Block getBlockInstance(Class<? extends Block> clazz, BlockPosition pos) {
+        try {
+            return clazz.getConstructor(BlockPosition.class).newInstance(pos);
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
+            e.printStackTrace();
+            throw new RuntimeException("Invalid block constructor!");
+        }
+    }
+
+    public static Block getBlockInstance(Blocks b, BlockPosition pos) {
+        return getBlockInstance(b.getClazz(), pos);
+    }
+
+    public Class<? extends Block> getClazz() {
+        return clazz;
+    }
+}
diff --git a/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Dirt.java b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Dirt.java
new file mode 100644
index 000000000..27a063986
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/game/datatypes/blocks/Dirt.java
@@ -0,0 +1,26 @@
+package de.bixilon.minosoft.game.datatypes.blocks;
+
+import de.bixilon.minosoft.game.datatypes.BlockPosition;
+
+public class Dirt implements Block {
+    final BlockPosition position;
+
+    public Dirt(BlockPosition position) {
+        this.position = position;
+    }
+
+    @Override
+    public BlockPosition getBlockPosition() {
+        return position;
+    }
+
+    @Override
+    public int getLegacyId() {
+        return 0;
+    }
+
+    @Override
+    public String getLegacyIdentifier() {
+        return "minecraft:dirt";
+    }
+}