diff --git a/src/main/java/com/volmit/iris/v2/generator/IrisComplex.java b/src/main/java/com/volmit/iris/v2/generator/IrisComplex.java
index c372c6658..ad60e87ac 100644
--- a/src/main/java/com/volmit/iris/v2/generator/IrisComplex.java
+++ b/src/main/java/com/volmit/iris/v2/generator/IrisComplex.java
@@ -109,8 +109,16 @@ public class IrisComplex implements DataProvider
 			-> engine.getDimension().getCaveBiomeStyle().create(rng.nextRNG()).stream()
 				.zoom(r.getCaveBiomeZoom())
 				.selectRarity(r.getCaveBiomes())
-				.convertCached((s) -> data.getBiomeLoader().load(s)
-						.setInferredType(InferredType.CAVE))
+				.onNull("")
+				.convertCached((s) -> {
+					if(s.isEmpty())
+					{
+						return new IrisBiome();
+					}
+
+					return data.getBiomeLoader().load(s)
+							.setInferredType(InferredType.CAVE);
+				})
 			).convertAware2D(ProceduralStream::get).cache2D(cacheSize);
 		landBiomeStream = regionStream.convert((r)
 			-> engine.getDimension().getLandBiomeStyle().create(rng.nextRNG()).stream()
diff --git a/src/main/java/com/volmit/iris/v2/generator/actuator/IrisTerrainActuator.java b/src/main/java/com/volmit/iris/v2/generator/actuator/IrisTerrainActuator.java
index 3ddadd6ce..1b03b5c2e 100644
--- a/src/main/java/com/volmit/iris/v2/generator/actuator/IrisTerrainActuator.java
+++ b/src/main/java/com/volmit/iris/v2/generator/actuator/IrisTerrainActuator.java
@@ -113,21 +113,18 @@ public class IrisTerrainActuator extends EngineAssignedActuator<BlockData>
 
                     for(CaveResult cl : caves)
                     {
-                        if(cl.getFloor() < 0 || cl.getFloor() > 255 || cl.getCeiling() > 255 || cl.getCeiling() < 0)
+                        if(cl.getFloor() < 0 || cl.getFloor() > getEngine().getHeight() || cl.getCeiling() > getEngine().getHeight() || cl.getCeiling() < 0)
                         {
                             continue;
                         }
 
-                        KList<BlockData> floor = cave.generateLayers(realX, realZ, rng, cl.getFloor() - 2, cl.getFloor() - 2, getData());
-                        KList<BlockData> ceiling = cave.generateLayers(realX + 656, realZ - 656, rng, (ch) - cl.getCeiling() - 2, (ch) - cl.getCeiling() - 2, getData());
-                        BlockData blockc = null;
+                        KList<BlockData> floor = cave.generateLayers(realX, realZ, rng, cl.getFloor(), cl.getFloor(), getData());
+                        KList<BlockData> ceiling = cave.generateLayers(realX + 656, realZ - 656, rng,
+                                (he) - cl.getCeiling(),
+                                (he) - cl.getCeiling(), getData());
+
                         for(int j = 0; j < floor.size(); j++)
                         {
-                            if(j == 0)
-                            {
-                                blockc = floor.get(j);
-                            }
-
                             h.set(xf, cl.getFloor() - j, zf, floor.get(j));
                         }
 
diff --git a/src/main/java/com/volmit/iris/v2/scaffold/stream/ProceduralStream.java b/src/main/java/com/volmit/iris/v2/scaffold/stream/ProceduralStream.java
index 9438f37a9..5d571fe41 100644
--- a/src/main/java/com/volmit/iris/v2/scaffold/stream/ProceduralStream.java
+++ b/src/main/java/com/volmit/iris/v2/scaffold/stream/ProceduralStream.java
@@ -8,10 +8,7 @@ import com.volmit.iris.v2.scaffold.stream.arithmetic.*;
 import com.volmit.iris.v2.scaffold.stream.convert.*;
 import com.volmit.iris.v2.scaffold.stream.interpolation.Interpolated;
 import com.volmit.iris.v2.scaffold.stream.sources.FunctionStream;
-import com.volmit.iris.v2.scaffold.stream.utility.CachedStream2D;
-import com.volmit.iris.v2.scaffold.stream.utility.ProfiledStream;
-import com.volmit.iris.v2.scaffold.stream.utility.SemaphoreStream;
-import com.volmit.iris.v2.scaffold.stream.utility.SynchronizedStream;
+import com.volmit.iris.v2.scaffold.stream.utility.*;
 import com.volmit.iris.util.Function2;
 import com.volmit.iris.util.Function3;
 import com.volmit.iris.util.Function4;
@@ -55,6 +52,11 @@ public interface ProceduralStream<T> extends ProceduralLayer, Interpolated<T>
 		return new ProfiledStream<>(this, memory);
 	}
 
+	default ProceduralStream<T> onNull(T v)
+	{
+		return new NullSafeStream<>(this, v);
+	}
+
 	default ProceduralStream<T> add(Function3<Double, Double, Double, Double> a)
 	{
 		return new AddingStream<>(this, a);
diff --git a/src/main/java/com/volmit/iris/v2/scaffold/stream/utility/NullSafeStream.java b/src/main/java/com/volmit/iris/v2/scaffold/stream/utility/NullSafeStream.java
new file mode 100644
index 000000000..412962c38
--- /dev/null
+++ b/src/main/java/com/volmit/iris/v2/scaffold/stream/utility/NullSafeStream.java
@@ -0,0 +1,58 @@
+package com.volmit.iris.v2.scaffold.stream.utility;
+
+import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.LoadingCache;
+import com.volmit.iris.v2.scaffold.cache.Cache;
+import com.volmit.iris.v2.scaffold.stream.BasicStream;
+import com.volmit.iris.v2.scaffold.stream.ProceduralStream;
+
+public class NullSafeStream<T> extends BasicStream<T> implements ProceduralStream<T>
+{
+	private final ProceduralStream<T> stream;
+	private final T ifNull;
+
+	public NullSafeStream(ProceduralStream<T> stream, T ifNull)
+	{
+		super();
+		this.stream = stream;
+		this.ifNull = ifNull;
+	}
+
+	@Override
+	public double toDouble(T t)
+	{
+		return stream.toDouble(t);
+	}
+
+	@Override
+	public T fromDouble(double d)
+	{
+		return stream.fromDouble(d);
+	}
+
+	@Override
+	public T get(double x, double z)
+	{
+		T t = stream.get(x, z);
+
+		if(t == null)
+		{
+			return ifNull;
+		}
+
+		return t;
+	}
+
+	@Override
+	public T get(double x, double y, double z)
+	{
+		T t = stream.get(x, y, z);
+
+		if(t == null)
+		{
+			return ifNull;
+		}
+
+		return t;
+	}
+}