diff --git a/maps/mountain_map.tscn b/maps/mountain_map.tscn
index eb438165..2a6d1fe8 100644
--- a/maps/mountain_map.tscn
+++ b/maps/mountain_map.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=16 format=2]
+[gd_scene load_steps=19 format=2]
 
 [ext_resource path="res://models/height_map/height_map.tscn" type="PackedScene" id=1]
 [ext_resource path="res://shaders/stylized_water/stylized_water_material.tres" type="Material" id=2]
@@ -11,6 +11,8 @@
 [ext_resource path="res://entities/enemy/blue_enemy.tscn" type="PackedScene" id=9]
 [ext_resource path="res://models/ball/ball.tscn" type="PackedScene" id=10]
 [ext_resource path="res://models/red_button/red_button.tscn" type="PackedScene" id=11]
+[ext_resource path="res://maps/portal_placeholder.tscn" type="PackedScene" id=12]
+[ext_resource path="res://models/height_map/Material.material" type="Material" id=13]
 
 [sub_resource type="Curve3D" id=1]
 _data = {
@@ -70,6 +72,10 @@ tracks/1/keys = {
 } ]
 }
 
+[sub_resource type="CylinderShape" id=5]
+radius = 5.0
+height = 5.0
+
 [node name="MontainMap" type="Spatial"]
 script = ExtResource( 3 )
 drain_water_sound = ExtResource( 4 )
@@ -126,5 +132,22 @@ far = 200.0
 [node name="Boundary" parent="." instance=ExtResource( 5 )]
 transform = Transform( 15, 0, 0, 0, -0.2, -2.26494e-06, 0, 3.01992e-08, -15, 65, -60, 91 )
 
+[node name="CSGCylinder" type="CSGCylinder" parent="."]
+transform = Transform( -0.5, 0, -0.866025, 0, 1, 0, 0.866025, 0, -0.5, 55.2639, 3.8, 21.8429 )
+radius = 5.0
+height = 5.0
+material = ExtResource( 13 )
+
+[node name="PortalPlaceholder" parent="CSGCylinder" instance=ExtResource( 12 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -1.52588e-05, 2.5, -0.00272942 )
+map_name = "test_map"
+
+[node name="StaticBody" type="StaticBody" parent="CSGCylinder"]
+collision_layer = 4
+collision_mask = 0
+
+[node name="CollisionShape" type="CollisionShape" parent="CSGCylinder/StaticBody"]
+shape = SubResource( 5 )
+
 [connection signal="hit" from="Player" to="." method="_on_Player_hit"]
 [connection signal="pressed" from="Props/RedButton" to="." method="_on_RedButton_pressed"]
diff --git a/maps/portal_placeholder.gd b/maps/portal_placeholder.gd
new file mode 100644
index 00000000..21c3da3a
--- /dev/null
+++ b/maps/portal_placeholder.gd
@@ -0,0 +1,6 @@
+extends CSGCylinder
+
+export var map_name: String
+
+func _on_Portal_entered(_body):
+  GameState.change_map(map_name)
diff --git a/maps/portal_placeholder.tscn b/maps/portal_placeholder.tscn
new file mode 100644
index 00000000..1470893b
--- /dev/null
+++ b/maps/portal_placeholder.tscn
@@ -0,0 +1,25 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://maps/portal_placeholder.gd" type="Script" id=1]
+
+[sub_resource type="SpatialMaterial" id=19]
+albedo_color = Color( 0.639216, 0.141176, 0.141176, 1 )
+
+[sub_resource type="CylinderShape" id=20]
+
+[node name="PortalPlaceholder" type="CSGCylinder"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.0670445, 0, -135.074 )
+radius = 3.0
+height = 0.5
+material = SubResource( 19 )
+script = ExtResource( 1 )
+
+[node name="Area" type="Area" parent="."]
+collision_layer = 0
+monitorable = false
+
+[node name="CollisionShape" type="CollisionShape" parent="Area"]
+transform = Transform( 3, 0, 0, 0, 0.25, 0, 0, 0, 3, 0, 0, 0 )
+shape = SubResource( 20 )
+
+[connection signal="body_entered" from="Area" to="." method="_on_Portal_entered"]
diff --git a/maps/test_map.tscn b/maps/test_map.tscn
index f2a0efb1..c5808a65 100644
--- a/maps/test_map.tscn
+++ b/maps/test_map.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=36 format=2]
+[gd_scene load_steps=37 format=2]
 
 [ext_resource path="res://addons/scatter/demos/assets/grass/data/m_grass_52.tres" type="Material" id=1]
 [ext_resource path="res://addons/scatter/src/core/scatter.gd" type="Script" id=2]
@@ -20,6 +20,7 @@
 [ext_resource path="res://models/goweti/goweti.tscn" type="PackedScene" id=18]
 [ext_resource path="res://models/red_button/red_button.tscn" type="PackedScene" id=19]
 [ext_resource path="res://entities/enemy/purple_enemy.tscn" type="PackedScene" id=20]
+[ext_resource path="res://maps/portal_placeholder.tscn" type="PackedScene" id=21]
 
 [sub_resource type="BoxShape" id=3]
 extents = Vector3( 30, 1, 30 )
@@ -316,6 +317,10 @@ direction = 1
 [node name="Goweti" parent="." instance=ExtResource( 18 )]
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 60.906, -0.312, -0.581 )
 
+[node name="PortalPlaceholder" parent="." instance=ExtResource( 21 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.0670445, 0.244789, -135.074 )
+map_name = "mountain_map"
+
 [node name="Enemies" type="Spatial" parent="."]
 
 [node name="BlueEnemyPath" type="Path" parent="Enemies"]
@@ -358,14 +363,14 @@ transform = Transform( 0.854641, 0, -0.519218, 0, 1, 0, 0.519218, 0, 0.854641, 2
 [node name="BlueEnemy4" parent="Enemies/BlueEnemyPath4/PathFollow" instance=ExtResource( 10 )]
 transform = Transform( -1, 0, -8.74228e-08, 0, 1, 0, 8.74228e-08, 0, -1, 0, 0, 0 )
 
-[node name="BlueEnemyPath5" type="Path" parent="Enemies"]
+[node name="PurpleEnemyPath" type="Path" parent="Enemies"]
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -2.04762, 0, -119.803 )
 curve = SubResource( 18 )
 
-[node name="PathFollow" type="PathFollow" parent="Enemies/BlueEnemyPath5"]
+[node name="PathFollow" type="PathFollow" parent="Enemies/PurpleEnemyPath"]
 transform = Transform( -0.192319, 0, 0.981332, 0, 1, 0, -0.981332, 0, -0.192319, -21.9524, 0, 7.80272 )
 
-[node name="PurpleEnemy" parent="Enemies/BlueEnemyPath5/PathFollow" instance=ExtResource( 20 )]
+[node name="PurpleEnemy" parent="Enemies/PurpleEnemyPath/PathFollow" instance=ExtResource( 20 )]
 transform = Transform( -6, 0, 5.24537e-07, 0, 6, 0, -5.24537e-07, 0, -6, 0, 0, 0 )
 patrolling_speed = 18
 
diff --git a/models/height_map/Material.material b/models/height_map/Material.material
new file mode 100644
index 00000000..945bee18
Binary files /dev/null and b/models/height_map/Material.material differ
diff --git a/models/height_map/height_map.glb.import b/models/height_map/height_map.glb.import
index 2d5401fe..54453a98 100644
--- a/models/height_map/height_map.glb.import
+++ b/models/height_map/height_map.glb.import
@@ -18,7 +18,7 @@ nodes/custom_script=""
 nodes/storage=0
 nodes/use_legacy_names=false
 materials/location=1
-materials/storage=0
+materials/storage=1
 materials/keep_on_reimport=true
 meshes/octahedral_compression=true
 meshes/compress=4286