diff --git a/src/test/java/ca/recrown/islandsurvivalcraft/world/generation/UniBiomeIslandGeneratorTest.java b/src/test/java/ca/recrown/islandsurvivalcraft/world/generation/UniBiomeIslandGeneratorTest.java
index 496a29a..a3e167b 100644
--- a/src/test/java/ca/recrown/islandsurvivalcraft/world/generation/UniBiomeIslandGeneratorTest.java
+++ b/src/test/java/ca/recrown/islandsurvivalcraft/world/generation/UniBiomeIslandGeneratorTest.java
@@ -27,8 +27,8 @@ import ca.recrown.islandsurvivalcraft.world.IslandWorldMapper;
 public class UniBiomeIslandGeneratorTest {
     private final int SEED = 249398015;
     private final DummyWorld dummyWorld = new DummyWorld();
-    private final Cache<Point2, Double> blockValueCache = new Cache<>(4096);
-    private final Cache<Point2, Biome[]> biomeCache = new Cache<>(4096);
+    private final Cache<Point2, Double> blockValueCache = new Cache<>(524288);
+    private final Cache<Point2, Biome[]> biomeCache = new Cache<>(524288);
     private final Cache<Point2, Boolean> chunkExistenceCache = new Cache<>(16384);
 
     private class BiomeGenTask implements Runnable {
@@ -136,4 +136,34 @@ public class UniBiomeIslandGeneratorTest {
             }
         }
     }
+
+    @Test
+    @Timeout(value = 1, unit = TimeUnit.MINUTES)
+    public void testBiomeGenerationMultithread6000ChunksScatteredColumns() {
+        int chunksToDoEach = 1000;
+        Runnable g1 = new BiomeGenTask(chunksToDoEach, 0);
+        Runnable g2 = new BiomeGenTask(chunksToDoEach, 2);
+        Runnable g3 = new BiomeGenTask(chunksToDoEach, 4);
+        Runnable g4 = new BiomeGenTask(chunksToDoEach, 6);
+        Runnable g5 = new BiomeGenTask(chunksToDoEach, 8);
+        Runnable g6 = new BiomeGenTask(chunksToDoEach, 10);
+
+        ExecutorService ex = Executors.newFixedThreadPool(6);
+        LinkedList<Future<?>> tasks = new LinkedList<>();
+        tasks.add(ex.submit(g1));
+        tasks.add(ex.submit(g2));
+        tasks.add(ex.submit(g3));
+        tasks.add(ex.submit(g4));
+        tasks.add(ex.submit(g5));
+        tasks.add(ex.submit(g6));
+
+        while (!tasks.isEmpty()) {
+            try {
+                tasks.pop().get();
+            } catch (InterruptedException | ExecutionException e) {
+                e.printStackTrace();
+                assertFalse(false, e.getCause().getMessage());
+            }
+        }
+    }
 }
\ No newline at end of file