diff --git a/src/gameplay/biome.cpp b/src/gameplay/biome.cpp
index 51b4361..6d4d893 100644
--- a/src/gameplay/biome.cpp
+++ b/src/gameplay/biome.cpp
@@ -185,7 +185,7 @@ int get_interpolated_height(float world_x, float world_z, float temp,
 */
 
 BiomeType determine_biome(const BiomeConditions& conditions) {
-    if (conditions.mountainous > 0.85) {
+    if (conditions.mountainous > 0.75) {
         return MOUNTAIN;
     }
     auto temp = conditions.temp;
diff --git a/src/gameplay/chunk_generator.cpp b/src/gameplay/chunk_generator.cpp
index 3c1cab6..db8aad0 100644
--- a/src/gameplay/chunk_generator.cpp
+++ b/src/gameplay/chunk_generator.cpp
@@ -164,16 +164,16 @@ void ChunkGenerator::generate_heightmap() {
             amplitude = std::lerp(10, 40, t);
             */
             float t;
-            if (mountainous >= 0.8f) {
-                t = Math::smootherstep(0.80f, 0.85, mountainous);
+            if (mountainous >= 0.7f) {
+                t = Math::smootherstep(0.7f, 0.75, mountainous);
                 base_y = std::lerp(72, 88, t);
                 amplitude = std::lerp(28, 48, t);
-            } else if (mountainous >= 0.75f) {
-                t = Math::smootherstep(0.75f, 0.80f, mountainous);
+            } else if (mountainous >= 0.65f) {
+                t = Math::smootherstep(0.65f, 0.7f, mountainous);
                 base_y = std::lerp(68, 72, t);
                 amplitude = std::lerp(18, 28, t);
             } else {
-                t = Math::smootherstep(0.5, 0.75, mountainous);
+                t = Math::smootherstep(0.55, 0.65, mountainous);
                 base_y = std::lerp(60, 68, t);
                 amplitude = std::lerp(8, 18, t);
             }