diff --git a/config/terrain_movement.yaml b/config/terrain_movement.yaml
index b4e0db2..2ba79ab 100644
--- a/config/terrain_movement.yaml
+++ b/config/terrain_movement.yaml
@@ -7,8 +7,8 @@ mountain_rock_height_km: 2.3        # Height in km >= 2.3 is rocky mountain
 snow_height_km: 3.1                 # Altitude in km >= 3.1 is high peak snow
 polar_snow_line_enabled: true       # Whether latitude reduces snowline altitude
 polar_snow_line_base_km: 2.5        # Base snowline at temperate latitudes
-polar_snow_factor_start: 0.40       # Latitude distFromCenter where polar cooling starts
-polar_snow_factor_end: 0.85         # Latitude distFromCenter where sea-level snowline is reached
+polar_snow_factor_start: 0.88       # Latitude distFromCenter where polar cooling starts (polar caps only)
+polar_snow_factor_end: 0.98         # Latitude distFromCenter where sea-level snowline is reached
 
 # Slope and elevation movement penalties
 # Elevation difference (deltaH in km) between hex centers
diff --git a/qscenerenderer.cpp b/qscenerenderer.cpp
index 6074f82..25d104f 100644
--- a/qscenerenderer.cpp
+++ b/qscenerenderer.cpp
@@ -1546,9 +1546,14 @@ void QSceneRenderer::mousePressEvent(QMouseEvent *event)
             update();
             return;
         } else if (event->button() == Qt::RightButton) {
-            // Right click: Move selected unit directly to hex!
+            // Right click: Attack enemy unit or move selected unit directly to hex!
             if (selected) {
-                GameManager::instance().commandMoveSelected(hitX, hitY, m_point, m_numPoints05);
+                Unit *enemy = GameManager::instance().getUnitAt(hitX, hitY);
+                if (enemy && enemy->playerId != selected->playerId) {
+                    GameManager::instance().commandAttack(enemy);
+                } else {
+                    GameManager::instance().commandMoveSelected(hitX, hitY, m_point, m_numPoints05);
+                }
                 update();
                 return;
             }
diff --git a/terrainmovementmanager.cpp b/terrainmovementmanager.cpp
index 508ab0c..94323fa 100644
--- a/terrainmovementmanager.cpp
+++ b/terrainmovementmanager.cpp
@@ -12,8 +12,8 @@ TerrainMovementConfig::TerrainMovementConfig()
       snowHeightKm(3.1f),
       polarSnowLineEnabled(true),
       polarSnowLineBaseKm(2.5f),
-      polarSnowFactorStart(0.40f),
-      polarSnowFactorEnd(0.85f),
+      polarSnowFactorStart(0.88f),
+      polarSnowFactorEnd(0.98f),
       uphillSlopeMultiplier(4.0f),
       downhillSlopeBonusMultiplier(2.0f),
       minStepCost(0.25f),
@@ -143,7 +143,7 @@ QString TerrainMovementManager::getTerrainType(int tx, int ty, Matrix2D<TerrainP
         return "water";
     }
 
-    float heightKm = (tp.height / 255.0f) * 3.5f + 1.0f;
+    float heightKm = (tp.height / 255.0f) * 3.5f;
 
     // 2. High peak snow
     if (heightKm >= m_config.snowHeightKm) {