diff --git a/src/net/torvald/terrarum/modulebasegame/worldgenerator/Terragen.kt b/src/net/torvald/terrarum/modulebasegame/worldgenerator/Terragen.kt
index c3cacd726..f2cf7feda 100644
--- a/src/net/torvald/terrarum/modulebasegame/worldgenerator/Terragen.kt
+++ b/src/net/torvald/terrarum/modulebasegame/worldgenerator/Terragen.kt
@@ -250,6 +250,7 @@ interface TerragenParams {
     val caveShapeFreq: Double //adjust the "density" of the caves
     val caveAttenuateScale: Double // used with the caveAttenuateBias, controls the "concentration" of the cave gen
     val caveAttenuateBias: Double // 1.0: flattens the gradient (deep voids are less tend to be larger). Also controls the distribution of ores. Equation: x^(log(bias) / log(0.5))
+    val caveAttenuateBias1: Double // 1.0: flattens the gradient (deep voids are less tend to be larger). Also controls the distribution of ores. Equation: x^(log(bias) / log(0.5))
     val caveSelectThre: Double // also adjust this if you've touched the bias value. Number can be greater than 1.0
     val caveBlockageFractalFreq: Double
     val caveBlockageSelectThre: Double // adjust cave closing-up strength. Lower = more closing
@@ -268,6 +269,7 @@ data class TerragenParamsAlpha1(
     override val caveShapeFreq: Double = 4.0, //adjust the "density" of the caves
     override val caveAttenuateScale: Double = 1.0, // used with the caveAttenuateBias, controls the "concentration" of the cave gen
     override val caveAttenuateBias: Double = 0.90, // 1.0: flattens the gradient (deep voids are less tend to be larger). Also controls the distribution of ores. Equation: x^(log(bias) / log(0.5))
+    override val caveAttenuateBias1: Double = 0.5, // 1.0: flattens the gradient (deep voids are less tend to be larger). Also controls the distribution of ores. Equation: x^(log(bias) / log(0.5))
     override val caveSelectThre: Double = 0.918, // also adjust this if you've touched the bias value. Number can be greater than 1.0
     override val caveBlockageFractalFreq: Double = 8.88,
     override val caveBlockageSelectThre: Double = 1.40, // adjust cave closing-up strength. Lower = more closing
@@ -287,9 +289,10 @@ data class TerragenParamsAlpha2(
     override val mountainDisturbance: Double = 0.7, // greater = more distortion, overhangs
 
     override val caveShapeFreq: Double = 4.0, //adjust the "density" of the caves
-    override val caveAttenuateScale: Double = 0.95, // used with the caveAttenuateBias, controls the "concentration" of the cave gen
-    override val caveAttenuateBias: Double = 0.93, // 1.0: flattens the gradient (deep voids are less tend to be larger). Also controls the distribution of ores. Equation: x^(log(bias) / log(0.5))
-    override val caveSelectThre: Double = 0.918, // also adjust this if you've touched the bias value. Number can be greater than 1.0
+    override val caveAttenuateScale: Double = 0.94, // used with the caveAttenuateBias, controls the "concentration" of the cave gen
+    override val caveAttenuateBias: Double = 0.95, // 1.0: flattens the gradient (deep voids are less tend to be larger). Also controls the distribution of ores. Equation: x^(log(bias) / log(0.5))
+    override val caveAttenuateBias1: Double = 0.90, // 1.0: flattens the gradient (deep voids are less tend to be larger). Also controls the distribution of ores. Equation: x^(log(bias) / log(0.5))
+    override val caveSelectThre: Double = 0.915, // also adjust this if you've touched the bias value. Number can be greater than 1.0
     override val caveBlockageFractalFreq: Double = 8.88,
     override val caveBlockageSelectThre: Double = 1.40, // adjust cave closing-up strength. Lower = more closing
 
diff --git a/src/net/torvald/terrarum/tests/WorldgenNoiseSandbox.kt b/src/net/torvald/terrarum/tests/WorldgenNoiseSandbox.kt
index 0ff947d23..93e1faa4b 100644
--- a/src/net/torvald/terrarum/tests/WorldgenNoiseSandbox.kt
+++ b/src/net/torvald/terrarum/tests/WorldgenNoiseSandbox.kt
@@ -606,17 +606,29 @@ internal object TerragenTest : NoiseMaker {
             it.setBias(params.caveAttenuateBias) // (0.5+) adjust the "concentration" of the cave gen. Lower = larger voids
         })}
 
-        val caveAttenuateBias = caveAttenuateBias0.let {
+        val caveAttenuateBias1 = ModuleCache().also { it.setSource(ModuleBias().also {
+            it.setSource(highlandLowlandSelectCache)
+            it.setBias(params.caveAttenuateBias1) // (0.5+) adjust the "concentration" of the cave gen. Lower = larger voids
+        })}
+
+        val caveAttenuateBiasForTerr = caveAttenuateBias0.let {
             ModuleScaleOffset().also {
                 it.setSource(caveAttenuateBias0)
                 it.setScale(params.caveAttenuateScale)
             }
         }
 
+        val caveAttenuateBiasForOres = caveAttenuateBias0.let {
+            ModuleScaleOffset().also {
+                it.setSource(caveAttenuateBias1)
+                it.setScale(params.caveAttenuateScale)
+            }
+        }
+
         val caveShapeAttenuate = ModuleCombiner().also {
             it.setType(ModuleCombiner.CombinerType.MULT)
             it.setSource(0, caveShape)
-            it.setSource(1, caveAttenuateBias)
+            it.setSource(1, caveAttenuateBiasForTerr)
         }
 
         val cavePerturbFractal = ModuleFractal().also {
@@ -660,7 +672,7 @@ internal object TerragenTest : NoiseMaker {
         val caveBlockageAttenuate = ModuleCombiner().also {
             it.setType(ModuleCombiner.CombinerType.MULT)
             it.setSource(0, caveBlockageFractal)
-            it.setSource(1, caveAttenuateBias)
+            it.setSource(1, caveAttenuateBiasForTerr)
         }
 
         val caveBlockageSelect = ModuleSelect().also {
@@ -711,7 +723,7 @@ internal object TerragenTest : NoiseMaker {
             it.setScaleX(1.0 / params.featureSize) // adjust this value to change features size
             it.setScaleY(1.0 / params.featureSize)
             it.setScaleZ(1.0 / params.featureSize)
-            it.setSource(caveAttenuateBias)
+            it.setSource(caveAttenuateBiasForOres)
         }