diff --git a/IrisDimension.md b/IrisDimension.md
index f393c837..2876ae01 100644
--- a/IrisDimension.md
+++ b/IrisDimension.md
@@ -23,6 +23,7 @@
     "fluidPalette": ["WATER"],
     "caves": true,
     "preventLeafDecay": false,
+    "caveBiomeZoom": 1,
     "placeObjects": true,
     "shoreZoom": 1,
     "deposits": [],
@@ -100,6 +101,9 @@
 ## landZoom
 > This zooms in the land space
 
+## caveBiomeZoom
+> This zooms in the cave biome space
+
 ## shoreZoom
 > This can zoom the shores
 
diff --git a/IrisRegion.md b/IrisRegion.md
index 637d3265..63efcbb6 100644
--- a/IrisRegion.md
+++ b/IrisRegion.md
@@ -4,16 +4,17 @@
 {
     "shoreRatio": 0.13,
     "ridgeBiomes": [],
+    "spotBiomes": [],
+    "landBiomes": [],
+    "biomeImplosionRatio": 0.4,
+    "seaBiomes": [],
+    "deposits": [],
+    "caveBiomes": [],
     "shoreHeightMin": 1.2,
     "shoreBiomes": [],
     "name": "A Region",
     "shoreHeightMax": 3.2,
-    "spotBiomes": [],
-    "landBiomes": [],
-    "shoreHeightZoom": 3.14,
-    "biomeImplosionRatio": 0.4,
-    "seaBiomes": [],
-    "deposits": []
+    "shoreHeightZoom": 3.14
 }
 ```
 
@@ -44,6 +45,9 @@
 ## shoreBiomes
 > A list of root-level biomes in this region. Don't specify child biomes of other biomes here. Just the root parents.
 
+## caveBiomes
+> A list of root-level biomes in this region. Don't specify child biomes of other biomes here. Just the root parents.
+
 ## ridgeBiomes
 > Ridge biomes create a vein-like network like rivers through this region
 
diff --git a/iris.overworld.temperate/biomes/temperate-cave-plains.json b/iris.overworld.temperate/biomes/temperate-cave-plains.json
new file mode 100644
index 00000000..2c11b5ef
--- /dev/null
+++ b/iris.overworld.temperate/biomes/temperate-cave-plains.json
@@ -0,0 +1,31 @@
+{
+    "name": "Cave Plains",
+    "layers": [
+        {
+            "palette": [
+                "GRASS_BLOCK"
+            ]
+        },
+        {
+            "palette": [
+                "DIRT"
+            ]
+        }
+    ],
+    "decorators": [
+        {
+            "zoom": 0.3,
+            "chance": 0.19,
+            "palette": ["GRASS"],
+            "dispersion": "SCATTER",
+            "variance": "SCATTER"
+        }
+    ],
+    "derivative": "PLAINS",
+    "biomeDispersion": "WISPY",
+    "biomeZoom": 60,
+    "biomeScatter": [
+        "FOREST",
+        "PLAINS"
+    ]
+}
\ No newline at end of file
diff --git a/iris.overworld.temperate/regions/temperate.json b/iris.overworld.temperate/regions/temperate.json
index 70f6c04e..ce24a6ec 100644
--- a/iris.overworld.temperate/regions/temperate.json
+++ b/iris.overworld.temperate/regions/temperate.json
@@ -16,6 +16,9 @@
     "shoreBiomes": [
         "temperate-beach"
     ],
+    "caveBiomes": [
+        "temperate-cave-plains"
+    ],
     "deposits":[
         {
             "minHeight": 15,