diff --git a/src/definition/Scenery.cpp b/src/definition/Scenery.cpp
index bc4ab71..5bf666c 100644
--- a/src/definition/Scenery.cpp
+++ b/src/definition/Scenery.cpp
@@ -10,6 +10,7 @@
 #include "TerrainDefinition.h"
 #include "TexturesDefinition.h"
 #include "WaterDefinition.h"
+#include "Logs.h"
 
 static const double APP_HEADER = 19866544632.125;
 static const int DATA_VERSION = 1;
@@ -65,6 +66,7 @@ Scenery::FileOperationResult Scenery::saveGlobal(const std::string &filepath) co
     stream.write(&version_header);
     stream.write(&app_header);
 
+    Logs::debug() << "Scenery saved to file: " << filepath << std::endl;
     return FILE_OPERATION_OK;
 }
 
@@ -108,6 +110,7 @@ Scenery::FileOperationResult Scenery::loadGlobal(const std::string &filepath)
         return FILE_OPERATION_APP_MISMATCH;
     }
 
+    Logs::debug() << "Scenery loaded from file: " << filepath << std::endl;
     return FILE_OPERATION_OK;
 }
 
@@ -134,6 +137,8 @@ void Scenery::autoPreset(int seed)
     camera->setTarget(VECTOR_NORTH);
 
     validate();
+
+    Logs::debug() << "New scenery generated from seed " << seed << ":\n" << toString() << std::endl;
 }
 
 void Scenery::setAtmosphere(AtmosphereDefinition* atmosphere)
diff --git a/src/interface/modeler/quickapp/MainModelerWindow.cpp b/src/interface/modeler/quickapp/MainModelerWindow.cpp
index 1d37d72..46b1db4 100644
--- a/src/interface/modeler/quickapp/MainModelerWindow.cpp
+++ b/src/interface/modeler/quickapp/MainModelerWindow.cpp
@@ -20,8 +20,6 @@ MainModelerWindow::MainModelerWindow()
     scenery = new Scenery();
     scenery->autoPreset();
 
-    Logs::debug() << "Initialized scenery:\n" << scenery->toString() << std::endl;
-
     renderer = new OpenGLRenderer(scenery);
 
     render_preview_provider = new RenderPreviewProvider();
@@ -114,6 +112,29 @@ void MainModelerWindow::keyReleaseEvent(QKeyEvent *event)
                 QGuiApplication::instance()->exit();
             }
         }
+        else if (event->key() == Qt::Key_N)
+        {
+            if (event->modifiers() & Qt::ControlModifier)
+            {
+                getScenery()->autoPreset();
+                renderer->reset();
+            }
+        }
+        else if (event->key() == Qt::Key_S)
+        {
+            if (event->modifiers() & Qt::ControlModifier)
+            {
+                getScenery()->saveGlobal("saved.p3d");
+            }
+        }
+        else if (event->key() == Qt::Key_L or event->key() == Qt::Key_O)
+        {
+            if (event->modifiers() & Qt::ControlModifier)
+            {
+                getScenery()->loadGlobal("saved.p3d");
+                renderer->reset();
+            }
+        }
         else if (event->key() == Qt::Key_Z)
         {
             if (event->modifiers() & Qt::ControlModifier)
diff --git a/src/render/opengl/OpenGLRenderer.cpp b/src/render/opengl/OpenGLRenderer.cpp
index 44e415c..02a8f85 100644
--- a/src/render/opengl/OpenGLRenderer.cpp
+++ b/src/render/opengl/OpenGLRenderer.cpp
@@ -146,6 +146,18 @@ void OpenGLRenderer::paint()
     }
 }
 
+void OpenGLRenderer::reset()
+{
+    if (ready)
+    {
+        skybox->updateScenery();
+        water->updateScenery();
+        terrain->updateScenery();
+
+        cameraChangeEvent(render_camera);
+    }
+}
+
 void OpenGLRenderer::pause()
 {
     paused = true;
diff --git a/src/render/opengl/OpenGLRenderer.h b/src/render/opengl/OpenGLRenderer.h
index c3f840b..0d0de51 100644
--- a/src/render/opengl/OpenGLRenderer.h
+++ b/src/render/opengl/OpenGLRenderer.h
@@ -26,6 +26,11 @@ public:
     void resize(int width, int height);
     void paint();
 
+    /**
+     * Reset the whole state (when the scenery has been massively updated).
+     */
+    void reset();
+
     /**
      * Pause the rendering process.
      *
diff --git a/src/render/opengl/OpenGLTerrain.cpp b/src/render/opengl/OpenGLTerrain.cpp
index 070e330..ee6aee2 100644
--- a/src/render/opengl/OpenGLTerrain.cpp
+++ b/src/render/opengl/OpenGLTerrain.cpp
@@ -90,6 +90,10 @@ void OpenGLTerrain::initialize()
 
 void OpenGLTerrain::update()
 {
+    for (auto &chunk: _chunks)
+    {
+        chunk->askReset(true, true);
+    }
 }
 
 void OpenGLTerrain::render()