diff --git a/Tools/Scripts/MapGenerator.cs b/Tools/Scripts/MapGenerator.cs
index 9ae2d6e..5f1d3ba 100644
--- a/Tools/Scripts/MapGenerator.cs
+++ b/Tools/Scripts/MapGenerator.cs
@@ -519,6 +519,7 @@ public partial class MapGenerator : TextureRect
 				float raw = _heightMap[x, y];
 				float classifyH = raw;
 				float curvedH;
+				float distToCrater = new Vector2(x, y).DistanceTo(_impactCenter);
 				if (_curveOn)
 				{
 					// v4: per-column shelf modulation — anchors and strength from the
@@ -528,14 +529,20 @@ public partial class MapGenerator : TextureRect
 					float plateauLo = HeightCurve.PLATEAU_BASE + _plateauNoise.GetNoise2D(x, y) * HeightCurve.PLATEAU_AMP;
 					float shelfSpan = HeightCurve.ShelfSpan((_strengthNoise.GetNoise2D(x, y) + 1f) * 0.5f);
 
-					float edgeShift = _detailOn ? _edgeNoise.GetNoise2D(x, y) * _edgeAmpRaw : 0f;
+					// Detail yields to the crater: zero inside the carve, feathered just
+					// outside it, so the carve stays the final authority on its terrain.
+					float wCrater = _detailOn
+						? TerrainDetailPass.CraterDetailWeight(distToCrater, _impactRadius)
+						: 0f;
+
+					float edgeShift = _detailOn ? _edgeNoise.GetNoise2D(x, y) * _edgeAmpRaw * wCrater : 0f;
 					curvedH = HeightCurve.Apply(raw, _hMaxSeed, benchLo, shelfSpan, plateauLo, shelfSpan, _curveKnots, edgeShift);
 
-					if (_detailOn)
+					if (_detailOn && wCrater > 0f)
 					{
 						float wShelf = TerrainDetailPass.ShelfWeight(raw, _curveKnots, edgeShift);
 						if (wShelf > 0f)
-							curvedH += _reliefNoise.GetNoise2D(x, y) * reliefAmpRaw * wShelf;
+							curvedH += _reliefNoise.GetNoise2D(x, y) * reliefAmpRaw * wShelf * wCrater;
 					}
 				}
 				else
@@ -546,8 +553,6 @@ public partial class MapGenerator : TextureRect
 				// --- 5. CARVE THE CRATER (The Flooded Bay & Landbridge Fix!) ---
 				// Both maps are carved from LOCALS and written once, so the curve-off
 				// aliasing (classify and height are the same array) cannot double-carve.
-				float distToCrater = new Vector2(x, y).DistanceTo(_impactCenter);
-
 				// We only carve the physical hole at 80% of the radius to guarantee a landbridge!
 				if (distToCrater < physicalCraterRadius)
 				{
diff --git a/Tools/Scripts/TerrainDetailPass.cs b/Tools/Scripts/TerrainDetailPass.cs
index 3687db3..44b1985 100644
--- a/Tools/Scripts/TerrainDetailPass.cs
+++ b/Tools/Scripts/TerrainDetailPass.cs
@@ -52,6 +52,30 @@ public static class TerrainDetailPass
 	// ordering follows from it.
 	public const float EDGE_SAFETY_FRACTION = 2f / 3f;
 
+	// The crater carve is the final authority on its own terrain. Detail is masked
+	// out inside the physical carve radius (0.80 × CraterRadius — exactly where the
+	// carve applies) and feathers to full by 1.05 ×. Without this, detail moves a
+	// column's PRE-carve height, the carve's Lerp passes a fraction of that through,
+	// and columns sitting a metre or two above the sea inside the bowl get pushed
+	// under it — 532 px on seed 1158286446 in the first batch, terrain below the sea
+	// scalar that the (classify-driven, and correctly unchanged) water grid calls dry.
+	public const float CRATER_DETAIL_EXCL_FACTOR = 0.80f;
+	public const float CRATER_DETAIL_FEATHER_FACTOR = 1.05f;
+
+	/// <summary>
+	/// Detail weight from distance to the impact centre: 0 inside the carve, 1 well
+	/// outside it, linear between. <paramref name="craterRadius"/> is the configured
+	/// CraterRadius (the carve itself uses 0.80 × of it).
+	/// </summary>
+	public static float CraterDetailWeight(float distToCrater, float craterRadius)
+	{
+		float excl = craterRadius * CRATER_DETAIL_EXCL_FACTOR;
+		if (distToCrater <= excl) return 0f;
+		float feather = craterRadius * CRATER_DETAIL_FEATHER_FACTOR;
+		if (distToCrater >= feather) return 1f;
+		return (distToCrater - excl) / (feather - excl);
+	}
+
 	/// <summary>
 	/// The largest per-column knot shift this preset allows: bounded by the band
 	/// squeeze above, which also keeps the knot set strictly ordered