diff --git a/app.js b/app.js
index cbc33f1..627498b 100644
--- a/app.js
+++ b/app.js
@@ -1201,6 +1201,133 @@ function updateLightningArcs() {
   }
 }
 
+// === BATCAVE AREA ===
+// Dark metallic workshop terminal positioned back-left of the main glass platform.
+// A CubeCamera reflection probe captures the local environment and applies it
+// to all high-metalness surfaces in this area for physically-based reflections.
+
+const BATCAVE_ORIGIN = new THREE.Vector3(-10, 0, -8);
+
+const batcaveGroup = new THREE.Group();
+batcaveGroup.position.copy(BATCAVE_ORIGIN);
+scene.add(batcaveGroup);
+
+// Reflection probe — 128-px cube render target for PBR metallic surfaces
+const batcaveProbeTarget = new THREE.WebGLCubeRenderTarget(128, {
+  type: THREE.HalfFloatType,
+  generateMipmaps: true,
+  minFilter: THREE.LinearMipmapLinearFilter,
+});
+const batcaveProbe = new THREE.CubeCamera(0.1, 80, batcaveProbeTarget);
+batcaveProbe.position.set(0, 1.2, -1); // centred above the console
+batcaveGroup.add(batcaveProbe);
+
+// Brushed-steel floor panels
+const batcaveFloorMat = new THREE.MeshStandardMaterial({
+  color: 0x0d1520,
+  metalness: 0.92,
+  roughness: 0.08,
+  envMapIntensity: 1.4,
+});
+
+// Anodised wall panels with faint accent tint
+const batcaveWallMat = new THREE.MeshStandardMaterial({
+  color: 0x0a1828,
+  metalness: 0.85,
+  roughness: 0.15,
+  emissive: new THREE.Color(NEXUS.colors.accent).multiplyScalar(0.03),
+  envMapIntensity: 1.2,
+});
+
+// High-gloss terminal console surface
+const batcaveConsoleMat = new THREE.MeshStandardMaterial({
+  color: 0x060e16,
+  metalness: 0.95,
+  roughness: 0.05,
+  envMapIntensity: 1.6,
+});
+
+// All metallic mats that receive the reflection probe envMap
+const batcaveMetallicMats = [batcaveFloorMat, batcaveWallMat, batcaveConsoleMat];
+
+// Floor slab
+const batcaveFloor = new THREE.Mesh(
+  new THREE.BoxGeometry(6, 0.08, 6),
+  batcaveFloorMat
+);
+batcaveFloor.position.y = -0.04;
+batcaveGroup.add(batcaveFloor);
+
+// Back wall
+const batcaveBackWall = new THREE.Mesh(
+  new THREE.BoxGeometry(6, 3, 0.1),
+  batcaveWallMat
+);
+batcaveBackWall.position.set(0, 1.5, -3);
+batcaveGroup.add(batcaveBackWall);
+
+// Left side wall
+const batcaveLeftWall = new THREE.Mesh(
+  new THREE.BoxGeometry(0.1, 3, 6),
+  batcaveWallMat
+);
+batcaveLeftWall.position.set(-3, 1.5, 0);
+batcaveGroup.add(batcaveLeftWall);
+
+// Console desk base
+const batcaveConsoleBase = new THREE.Mesh(
+  new THREE.BoxGeometry(3, 0.7, 1.2),
+  batcaveConsoleMat
+);
+batcaveConsoleBase.position.set(0, 0.35, -1.5);
+batcaveGroup.add(batcaveConsoleBase);
+
+// Console screen bezel
+const batcaveScreenBezel = new THREE.Mesh(
+  new THREE.BoxGeometry(2.6, 1.4, 0.06),
+  batcaveConsoleMat
+);
+batcaveScreenBezel.position.set(0, 1.4, -2.08);
+batcaveScreenBezel.rotation.x = Math.PI * 0.08;
+batcaveGroup.add(batcaveScreenBezel);
+
+// Screen glow face
+const batcaveScreenGlow = new THREE.Mesh(
+  new THREE.PlaneGeometry(2.2, 1.1),
+  new THREE.MeshBasicMaterial({
+    color: new THREE.Color(NEXUS.colors.accent).multiplyScalar(0.65),
+    transparent: true,
+    opacity: 0.82,
+  })
+);
+batcaveScreenGlow.position.set(0, 1.4, -2.05);
+batcaveScreenGlow.rotation.x = Math.PI * 0.08;
+batcaveGroup.add(batcaveScreenGlow);
+
+// Workshop point light — cool blue for metallic ambience
+const batcaveLight = new THREE.PointLight(NEXUS.colors.accent, 0.9, 14);
+batcaveLight.position.set(0, 2.8, -1);
+batcaveGroup.add(batcaveLight);
+
+// Ceiling strip emissive bar
+const batcaveCeilingStrip = new THREE.Mesh(
+  new THREE.BoxGeometry(4.2, 0.05, 0.14),
+  new THREE.MeshStandardMaterial({
+    color: NEXUS.colors.accent,
+    emissive: new THREE.Color(NEXUS.colors.accent),
+    emissiveIntensity: 1.1,
+  })
+);
+batcaveCeilingStrip.position.set(0, 2.95, -1.2);
+batcaveGroup.add(batcaveCeilingStrip);
+
+batcaveGroup.traverse(obj => {
+  if (obj.isMesh) obj.userData.zoomLabel = 'Batcave';
+});
+
+// Probe state — timestamp of last reflection capture (seconds)
+let batcaveProbeLastUpdate = -999;
+
 // === ANIMATION LOOP ===
 const clock = new THREE.Clock();
 
@@ -1244,6 +1371,18 @@ function animate() {
   // Subtle pulse on constellation opacity
   constellationLines.material.opacity = 0.12 + Math.sin(elapsed * 0.5) * 0.06;
 
+  // Batcave reflection probe — refresh every 2 s to capture dynamic scene changes
+  if (elapsed - batcaveProbeLastUpdate > 2.0) {
+    batcaveProbeLastUpdate = elapsed;
+    batcaveGroup.visible = false; // hide self to avoid self-capture artefacts
+    batcaveProbe.update(renderer, scene);
+    batcaveGroup.visible = true;
+    for (const mat of batcaveMetallicMats) {
+      mat.envMap = batcaveProbeTarget.texture;
+      mat.needsUpdate = true;
+    }
+  }
+
   // Glass platform — ripple edge glow outward from centre
   for (const { mat, distFromCenter } of glassEdgeMaterials) {
     const phase = elapsed * 1.1 - distFromCenter * 0.18;