diff --git a/kubejs/data/ad_astra/dimension/mars.json b/kubejs/data/ad_astra/dimension/mars.json
index 4d9fc2375..56143d3e6 100644
--- a/kubejs/data/ad_astra/dimension/mars.json
+++ b/kubejs/data/ad_astra/dimension/mars.json
@@ -40,8 +40,8 @@
 						"hardened": "tfg:rock/hardened_red_granite",
 						"gravel": "tfg:rock/gravel_red_granite",
 						"cobble": "gtceu:red_granite_cobblestone",
-						"sand": "minecraft:red_sand",
-						"sandstone": "minecraft:red_sandstone",
+						"sand": "tfc:sand/red",
+						"sandstone": "tfc:raw_sandstone/red",
 						"spike": "tfg:spike/red_granite_spike",
 						"loose": "tfg:loose/red_granite"
 					},
diff --git a/kubejs/data/tfg/worldgen/configured_feature/mars/underground/ice_cave.json b/kubejs/data/tfg/worldgen/configured_feature/mars/underground/ice_cave.json
new file mode 100644
index 000000000..57a0a88c6
--- /dev/null
+++ b/kubejs/data/tfg/worldgen/configured_feature/mars/underground/ice_cave.json
@@ -0,0 +1,4 @@
+{
+	"type": "tfc:ice_cave",
+	"config": {}
+}
\ No newline at end of file
diff --git a/kubejs/data/tfg/worldgen/configured_feature/mars/underground/ochrum_blob.json b/kubejs/data/tfg/worldgen/configured_feature/mars/underground/ochrum_blob.json
index cf33edd51..e6e0d9641 100644
--- a/kubejs/data/tfg/worldgen/configured_feature/mars/underground/ochrum_blob.json
+++ b/kubejs/data/tfg/worldgen/configured_feature/mars/underground/ochrum_blob.json
@@ -27,8 +27,8 @@
 					"Name": "create:ochrum"
 				},
 				"target": {
-					"predicate_type": "minecraft:tag_match",
-					"tag": "tfc:dirt"
+					"predicate_type": "minecraft:block_match",
+					"block": "ad_astra:venus_sand"
 				}
 			},
 			{
@@ -37,7 +37,7 @@
 				},
 				"target": {
 					"predicate_type": "minecraft:block_match",
-					"block": "ad_astra:venus_sand"
+					"block": "ad_astra:venus_sandstone"
 				}
 			}
 		]
diff --git a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/calcite.json b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/calcite.json
index c3ccbd063..963c7940f 100644
--- a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/calcite.json
+++ b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/calcite.json
@@ -3,7 +3,7 @@
 	"placement": [
 		{
 			"type": "minecraft:count",
-			"count": 4
+			"count": 3
 		},
 		{
 			"type": "minecraft:in_square"
@@ -16,7 +16,7 @@
 					"absolute": -24
 				},
 				"max_inclusive": {
-					"absolute": 75
+					"absolute": 90
 				}
 			}
 		}
diff --git a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/ice_cave.json b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/ice_cave.json
new file mode 100644
index 000000000..64e28d980
--- /dev/null
+++ b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/ice_cave.json
@@ -0,0 +1,28 @@
+{
+	"feature": "tfg:mars/underground/ice_cave",
+	"placement": [
+		{
+			"type": "tfc:climate",
+			"max_temperature": -85
+		},
+		{
+			"type": "minecraft:count",
+			"count": 15
+		},
+		{
+			"type": "minecraft:in_square"
+		},
+		{
+			"type": "minecraft:height_range",
+			"height": {
+				"type": "uniform",
+				"min_inclusive": {
+					"absolute": -16
+				},
+				"max_inclusive": {
+					"absolute": 110
+				}
+			}
+		}
+	]
+}
\ No newline at end of file
diff --git a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/icicle.json b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/icicle.json
new file mode 100644
index 000000000..2bc4f392a
--- /dev/null
+++ b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/icicle.json
@@ -0,0 +1,28 @@
+{
+	"feature": "tfc:icicle",
+	"placement": [
+		{
+			"type": "minecraft:count",
+			"count": 10
+		},
+		{
+			"type": "minecraft:in_square"
+		},
+		{
+			"type": "minecraft:height_range",
+			"height": {
+				"type": "biased_to_bottom",
+				"min_inclusive": {
+					"absolute": 0
+				},
+				"max_inclusive": {
+					"absolute": 150
+				}
+			}
+		},
+		{
+			"type": "tfc:climate",
+			"max_temperature": -30
+		}
+	]
+}
\ No newline at end of file
diff --git a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/mega_calcite.json b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/mega_calcite.json
index de356fbcb..00761526b 100644
--- a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/mega_calcite.json
+++ b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/mega_calcite.json
@@ -16,7 +16,7 @@
 					"absolute": -24
 				},
 				"max_inclusive": {
-					"absolute": 50
+					"absolute": 70
 				}
 			}
 		}
diff --git a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/ochrum_blob.json b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/ochrum_blob.json
index b08899350..843698b83 100644
--- a/kubejs/data/tfg/worldgen/placed_feature/mars/underground/ochrum_blob.json
+++ b/kubejs/data/tfg/worldgen/placed_feature/mars/underground/ochrum_blob.json
@@ -13,10 +13,10 @@
 			"height": {
 				"type": "minecraft:trapezoid",
 				"max_inclusive": {
-					"absolute": 80
+					"absolute": 120
 				},
 				"min_inclusive": {
-					"absolute": -32
+					"absolute": -24
 				}
 			}
 		},
diff --git a/kubejs/server_scripts/ad_astra/tags.js b/kubejs/server_scripts/ad_astra/tags.js
index f48058a84..0026b0e45 100644
--- a/kubejs/server_scripts/ad_astra/tags.js
+++ b/kubejs/server_scripts/ad_astra/tags.js
@@ -489,14 +489,20 @@ const registerAdAstraPlacedFeatures = (event) => {
 	//#region Mars
 
 	// Underground decoration
-	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/cave_column')
-	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/cave_spike')
-	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/large_cave_spike')
+	//event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/cave_column')
+	//event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/cave_spike')
+	//event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/large_cave_spike')
+	event.add('tfg:mars_underground_decoration', 'tfc:cave_spike')
+	event.add('tfg:mars_underground_decoration', 'tfc:cave_column')
+	event.add('tfg:mars_underground_decoration', 'tfc:large_cave_spike')
+
 	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/calcite')
 	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/mega_calcite')
 	event.add('tfg:mars_underground_decoration', 'tfc:icicle')
 	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/loose_rocks')
 	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/ochrum_blob')
+	event.add('tfg:mars_underground_decoration', 'tfg:mars/underground/ice_cave')
+
 	event.add('tfg:mars_underground_decoration', "tfg:earth/geode/amethyst")
 	event.add('tfg:mars_underground_decoration', "tfg:earth/geode/barite")
 	event.add('tfg:mars_underground_decoration', "tfg:earth/geode/calcite")
@@ -550,8 +556,6 @@ const registerAdAstraPlacedFeatures = (event) => {
 	event.add("tfg:mars_rusticus_vegetal_decoration", "tfg:mars/surface/bulb_moss")
 	event.add("tfg:mars_rusticus_vegetal_decoration", "tfg:mars/surface/aurant_polypore")
 	event.add("tfg:mars_rusticus_vegetal_decoration", "tfg:mars/surface/purple_polypore")
-	event.add("tfg:mars_rusticus_vegetal_decoration", "tfg:mars/surface/filalux_wings")
-	event.add("tfg:mars_rusticus_vegetal_decoration", "tfg:mars/surface/filalux_wings_top")
 
 	event.add("tfg:mars_rusticus_vegetal_decoration", "tfg:mars/surface/aeridium")
 	event.add("tfg:mars_rusticus_vegetal_decoration", "tfg:mars/surface/flammalix")
@@ -570,8 +574,9 @@ const registerAdAstraPlacedFeatures = (event) => {
 	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/small_amaranita_mushroom")
 	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/large_amaranita_mushroom")
 	
-	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/aurant_polypore")
 	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/purple_polypore")
+	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/filalux_wings")
+	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/filalux_wings_top")
 
 	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/cave_grass")
 	event.add("tfg:mars_sangnum_vegetal_decoration", "tfg:mars/surface/clawfern")