diff --git a/Assets/AssetsFORELLE/Prefabs/boulder.prefab b/Assets/AssetsFORELLE/Prefabs/boulder.prefab
index 6204879..bcee928 100644
--- a/Assets/AssetsFORELLE/Prefabs/boulder.prefab
+++ b/Assets/AssetsFORELLE/Prefabs/boulder.prefab
@@ -12,6 +12,7 @@ GameObject:
   - component: {fileID: 2931262115788872084}
   - component: {fileID: 8547966821854904316}
   - component: {fileID: 5950443230785378104}
+  - component: {fileID: 8814372359582481795}
   m_Layer: 0
   m_Name: boulder
   m_TagString: PressurePlatable
@@ -133,3 +134,17 @@ Rigidbody2D:
   m_SleepingMode: 1
   m_CollisionDetection: 0
   m_Constraints: 4
+--- !u!114 &8814372359582481795
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 2931262115788872085}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 2de907f50474c5b40bb803c5f51866f7, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  frictionless: {fileID: 6200000, guid: 9a162dcdc92b4194ba53630f8785bed1, type: 2}
+  frictionful: {fileID: 6200000, guid: b200e3c05da9fc94486c5941e94bd715, type: 2}
diff --git a/Assets/AssetsFORELLE/Script/BoulderFix.cs b/Assets/AssetsFORELLE/Script/BoulderFix.cs
new file mode 100644
index 0000000..262020d
--- /dev/null
+++ b/Assets/AssetsFORELLE/Script/BoulderFix.cs
@@ -0,0 +1,43 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class BoulderFix : MonoBehaviour
+ 
+{
+    
+    private Rigidbody2D rb;
+    private BoxCollider2D bc;
+    [SerializeField] private PhysicsMaterial2D frictionless;
+    [SerializeField] private PhysicsMaterial2D frictionful;
+    
+    void Start()
+    {
+        rb = GetComponent<Rigidbody2D>();
+        bc = GetComponent<BoxCollider2D>();
+        rb.mass = 8;
+        rb.drag = 1;
+
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+
+    void OnCollisionEnter2D(Collision2D col)
+    {
+        bc.sharedMaterial = frictionless;
+        rb.drag = 3;
+        
+    }
+
+    void OnCollisionExit2D(Collision2D col)
+    {
+        bc.sharedMaterial = frictionful;
+        rb.drag = 1;
+
+    }
+
+}
diff --git a/Assets/AssetsFORELLE/Script/BoulderFix.cs.meta b/Assets/AssetsFORELLE/Script/BoulderFix.cs.meta
new file mode 100644
index 0000000..d5d85aa
--- /dev/null
+++ b/Assets/AssetsFORELLE/Script/BoulderFix.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2de907f50474c5b40bb803c5f51866f7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Frictionful.physicsMaterial2D b/Assets/Frictionful.physicsMaterial2D
new file mode 100644
index 0000000..b9d990a
--- /dev/null
+++ b/Assets/Frictionful.physicsMaterial2D
@@ -0,0 +1,11 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!62 &6200000
+PhysicsMaterial2D:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: Frictionful
+  friction: 50
+  bounciness: 0
diff --git a/Assets/Frictionful.physicsMaterial2D.meta b/Assets/Frictionful.physicsMaterial2D.meta
new file mode 100644
index 0000000..18fd39c
--- /dev/null
+++ b/Assets/Frictionful.physicsMaterial2D.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: b200e3c05da9fc94486c5941e94bd715
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 6200000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scenes/Prototype.unity b/Assets/Scenes/Prototype.unity
index e596a85..563bbb0 100644
--- a/Assets/Scenes/Prototype.unity
+++ b/Assets/Scenes/Prototype.unity
@@ -2016,7 +2016,7 @@ Transform:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 170098608}
   m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
-  m_LocalPosition: {x: -36.74, y: 2.17, z: -0.022044204}
+  m_LocalPosition: {x: -37.52, y: 2.08, z: -0.022044204}
   m_LocalScale: {x: 0.42547998, y: 0.3653795, z: 0.42548}
   m_ConstrainProportionsScale: 0
   m_Children: []
@@ -39327,11 +39327,11 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 2931262115788872107, guid: a72839b3ed4bd20458a1b530b3f3d5bc, type: 3}
       propertyPath: m_LocalPosition.x
-      value: 28.087334
+      value: 28.23
       objectReference: {fileID: 0}
     - target: {fileID: 2931262115788872107, guid: a72839b3ed4bd20458a1b530b3f3d5bc, type: 3}
       propertyPath: m_LocalPosition.y
-      value: 0.26070547
+      value: 0.27
       objectReference: {fileID: 0}
     - target: {fileID: 2931262115788872107, guid: a72839b3ed4bd20458a1b530b3f3d5bc, type: 3}
       propertyPath: m_LocalPosition.z
@@ -39375,7 +39375,7 @@ PrefabInstance:
       objectReference: {fileID: 6200000, guid: 9a162dcdc92b4194ba53630f8785bed1, type: 2}
     - target: {fileID: 5950443230785378104, guid: a72839b3ed4bd20458a1b530b3f3d5bc, type: 3}
       propertyPath: m_LinearDrag
-      value: 5
+      value: 1
       objectReference: {fileID: 0}
     m_RemovedComponents: []
   m_SourcePrefab: {fileID: 100100000, guid: a72839b3ed4bd20458a1b530b3f3d5bc, type: 3}