diff --git a/dev.test/biomes/acave.json b/dev.test/biomes/acave.json
new file mode 100644
index 00000000..c1570699
--- /dev/null
+++ b/dev.test/biomes/acave.json
@@ -0,0 +1,55 @@
+{
+    "name": "Cave Biome 1",
+    "layers": [
+        {
+            "minHeight": 3,
+            "maxHeight": 3,
+            "palette": [
+                "WARPED_WART_BLOCK"
+            ]
+        }
+    ],
+    "objects": [
+        {
+            "chance": 1,
+            "density": 5,
+            "rotation": {
+                "enabled": true
+            },
+            "place": [
+                "testx"
+            ],
+            "translate": {
+                "x": 0,
+                "y": 0,
+                "z": 0
+            }
+        }
+    ],
+    "decorators": [
+        {
+            "zoom": 0.3,
+            "chance": 0.09,
+            "palette": ["BROWN_MUSHROOM"],
+            "dispersion": "SCATTER",
+            "variance": "SCATTER"
+        },
+        {
+            "zoom": 0.3,
+            "chance": 0.12,
+            "stackMin": 12,
+            "stackMax": 12,
+            "palette": ["TWISTING_VINES_PLANT"],
+            "dispersion": "SCATTER",
+            "variance": "SCATTER"
+        }
+    ],
+    "generators":[
+        {
+            "generator": "plain",
+            "min": 12,
+            "max": 12
+        }
+    ],
+    "derivative": "PLAINS"
+}
\ No newline at end of file
diff --git a/dev.test/objects/testx.iob b/dev.test/objects/testx.iob
new file mode 100644
index 00000000..41110535
Binary files /dev/null and b/dev.test/objects/testx.iob differ
diff --git a/iris.overworld.hot/biomes/hot-sandy-cave.json b/iris.overworld.hot/biomes/hot-sandy-cave.json
new file mode 100644
index 00000000..33947e28
--- /dev/null
+++ b/iris.overworld.hot/biomes/hot-sandy-cave.json
@@ -0,0 +1,68 @@
+{
+    "name": "Sandstone Caverns",
+    "layers": [
+        {
+            "minHeight": 1,
+            "maxHeight": 2,
+            "palette": [
+                "SMOOTH_SANDSTONE"
+            ]
+        }
+    ],
+    "slab": {
+        "dispersion": "WISPY",
+        "terrainZoom": 0.5,
+        "palette": [
+            "minecraft:sandstone_slab[type=bottom,waterlogged=false]",
+            "minecraft:smooth_sandstone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR"
+        ]
+    },
+    "decorators": [
+        {
+            "verticalZoom": 20,
+            "verticalVariance": "WISPY",
+            "dispersion": "SCATTER",
+            "variance": "SCATTER",
+            "stackMin": 1,
+            "stackMax": 2,
+            "chance": 0.01,
+            "palette": [
+                "CACTUS"
+            ]
+        },
+        {
+            "zoom": 0.3,
+            "chance": 0.0235,
+            "palette": [
+                "minecraft:polished_blackstone_button[face=floor,facing=east,powered=false]",
+                "minecraft:polished_blackstone_button[face=floor,facing=south,powered=false]"
+            ],
+            "dispersion": "SCATTER",
+            "variance": "SCATTER"
+        },
+        {
+            "zoom": 0.3,
+            "chance": 0.012,
+            "palette": [
+                "DEAD_BUSH"
+            ],
+            "dispersion": "SCATTER",
+            "variance": "SCATTER"
+        }
+    ],
+    "generators":[
+        {
+            "generator": "plain",
+            "min": 4,
+            "max": 6
+        },
+        {
+            "generator": "wavy",
+            "min": 2,
+            "max": 5
+        }
+    ],
+    "derivative": "DESERT"
+}
\ No newline at end of file
diff --git a/iris.overworld.hot/biomes/hot-sandy-red-cave.json b/iris.overworld.hot/biomes/hot-sandy-red-cave.json
new file mode 100644
index 00000000..2874aff0
--- /dev/null
+++ b/iris.overworld.hot/biomes/hot-sandy-red-cave.json
@@ -0,0 +1,68 @@
+{
+    "name": "Red Sandstone Cavern",
+    "layers": [
+        {
+            "maxHeight": 2,
+            "minHeight": 1,
+            "palette": [
+                "SMOOTH_RED_SANDSTONE"
+            ]
+        }
+    ],
+    "slab": {
+        "dispersion": "WISPY",
+        "terrainZoom": 0.5,
+        "palette": [
+            "minecraft:red_sandstone_slab[type=bottom,waterlogged=false]",
+            "minecraft:smooth_red_sandstone_slab[type=bottom,waterlogged=false]",
+            "AIR",
+            "AIR"
+        ]
+    },
+    "decorators": [
+        {
+            "verticalZoom": 20,
+            "verticalVariance": "WISPY",
+            "dispersion": "SCATTER",
+            "variance": "SCATTER",
+            "stackMin": 1,
+            "stackMax": 2,
+            "chance": 0.005,
+            "palette": [
+                "CACTUS"
+            ]
+        },
+        {
+            "zoom": 0.3,
+            "chance": 0.0235,
+            "palette": [
+                "minecraft:polished_blackstone_button[face=floor,facing=east,powered=false]",
+                "minecraft:polished_blackstone_button[face=floor,facing=south,powered=false]"
+            ],
+            "dispersion": "SCATTER",
+            "variance": "SCATTER"
+        },
+        {
+            "zoom": 0.3,
+            "chance": 0.092,
+            "palette": [
+                "DEAD_BUSH"
+            ],
+            "dispersion": "SCATTER",
+            "variance": "SCATTER"
+        }
+    ],
+    "generators":[
+        {
+            "generator": "plain",
+            "min": 4,
+            "max": 6
+        },
+        {
+            "generator": "wavy",
+            "min": 2,
+            "max": 5
+        }
+    ],
+    "derivative": "DESERT"
+}
\ No newline at end of file