diff --git a/biomes/mosaic-lith-black.json b/biomes/mosaic-lith-black.json
index 2f1d0090..b0085f01 100644
--- a/biomes/mosaic-lith-black.json
+++ b/biomes/mosaic-lith-black.json
@@ -205,7 +205,8 @@
         }
     ],
     "biomeZoom": 20,
-    "derivative": "SAVANNA",
+    "derivative": "BADLANDS",
+    "carvingBiome": "mosaic-lith-white",
     "biomeStyle": {
         "style": "IRIS"
     },
diff --git a/biomes/mosaic-lith-cyan.json b/biomes/mosaic-lith-cyan.json
index 9ce81903..88e5f9f5 100644
--- a/biomes/mosaic-lith-cyan.json
+++ b/biomes/mosaic-lith-cyan.json
@@ -229,6 +229,7 @@
         }
     ],
     "derivative": "WARPED_FOREST",
+    "carvingBiome": "mosaic-lith-purple",
     "wall": {
         "style": {
             "style": "STATIC"
diff --git a/biomes/mosaic-lith-green.json b/biomes/mosaic-lith-green.json
index 9d565e6e..f0ca6c1a 100644
--- a/biomes/mosaic-lith-green.json
+++ b/biomes/mosaic-lith-green.json
@@ -227,6 +227,7 @@
         }
     ],
     "derivative": "SWAMP",
+    "carvingBiome": "mosaic-lith-red",
     "wall": {
         "style": {
             "style": "STATIC"
diff --git a/biomes/mosaic-lith-purple.json b/biomes/mosaic-lith-purple.json
index ff71aef8..6d7657bc 100644
--- a/biomes/mosaic-lith-purple.json
+++ b/biomes/mosaic-lith-purple.json
@@ -196,6 +196,7 @@
         }
     ],
     "derivative": "BASALT_DELTAS",
+    "carvingBiome": "mosaic-lith-cyan",
     "wall": {
         "style": {
             "style": "STATIC"
diff --git a/biomes/mosaic-lith-red.json b/biomes/mosaic-lith-red.json
index 2bd5f459..be0bd37f 100644
--- a/biomes/mosaic-lith-red.json
+++ b/biomes/mosaic-lith-red.json
@@ -290,12 +290,14 @@
     ],
     "generators": [
         {
-            "min": 32,
+            "min": 25,
             "max": 60,
-            "generator": "plain-chaotic"
+            "generator": "wicked"
+
         }
     ],
     "derivative": "CRIMSON_FOREST",
+    "carvingBiome": "mosaic-lith-green",
     "wall": {
         "style": {
             "style": "STATIC"
diff --git a/biomes/mosaic-lith-white.json b/biomes/mosaic-lith-white.json
index d79dd1ed..5ed4ee23 100644
--- a/biomes/mosaic-lith-white.json
+++ b/biomes/mosaic-lith-white.json
@@ -187,10 +187,11 @@
         {
             "min": 28,
             "max": 41,
-            "generator": "plain"
+            "generator": "plain-cliffs-thin"
         }
     ],
     "derivative": "BASALT_DELTAS",
+    "carvingBiome": "mosaic-lith-black",
     "wall": {
         "style": {
             "style": "STATIC"
diff --git a/regions/mosaic.json b/regions/mosaic.json
index 4657fd2c..93c7b0fe 100644
--- a/regions/mosaic.json
+++ b/regions/mosaic.json
@@ -3,7 +3,7 @@
         {
             "tileset": "ruins",
             "zoom": 1,
-            "rarity": 15
+            "rarity": 600
         }
     ],
     "landBiomes": [
@@ -106,5 +106,5 @@
         ]
     },
     "shoreHeightZoom": 1.14,
-    "rarity": 30
+    "rarity": 15
 }
\ No newline at end of file