diff --git a/gui-src/css/styles.css b/gui-src/css/styles.css
index e89636bc..73c7ed8f 100644
--- a/gui-src/css/styles.css
+++ b/gui-src/css/styles.css
@@ -251,6 +251,14 @@ button:hover {
   margin: 15px 0;
 }
 
+#fillground-toggle {
+  accent-color: #fecc44;
+}
+
+.fillground-toggle-container, .scale-slider-container {
+  margin: 15px 0;
+}
+
 #winter-toggle {
   accent-color: #fecc44;
 }
diff --git a/gui-src/index.html b/gui-src/index.html
index fb560ef6..1922913d 100644
--- a/gui-src/index.html
+++ b/gui-src/index.html
@@ -91,7 +91,11 @@ <h2 data-localize="customization_settings">Customization Settings</h2>
           <label for="terrain-toggle" data-localize="terrain">Terrain:</label>
           <input type="checkbox" id="terrain-toggle" name="terrain-toggle">
         </div>
-
+        <!-- Fill ground Toggle Button -->
+        <div class="fillground-toggle-container">
+          <label for="fillground-toggle" data-localize="fillground">Fill Ground:</label>
+          <input type="checkbox" id="fillground-toggle" name="fillground-toggle">
+        </div>
         <!-- Winter Mode Toggle Button -->
         <div class="winter-toggle-container">
           <label for="winter-toggle" data-localize="winter_mode">Winter Mode:</label>
diff --git a/gui-src/js/main.js b/gui-src/js/main.js
index 168de5cd..3707057e 100644
--- a/gui-src/js/main.js
+++ b/gui-src/js/main.js
@@ -480,6 +480,7 @@ async function startGeneration() {
 
     var terrain = document.getElementById("terrain-toggle").checked;
     var winter_mode = document.getElementById("winter-toggle").checked;
+    var fill_ground = document.getElementById("fillground-toggle").checked;
     var scale = parseFloat(document.getElementById("scale-value-slider").value);
     var floodfill_timeout = parseInt(document.getElementById("floodfill-timeout").value, 10);
     var ground_level = parseInt(document.getElementById("ground-level").value, 10);
@@ -496,7 +497,8 @@ async function startGeneration() {
         groundLevel: ground_level,
         winterMode: winter_mode,
         floodfillTimeout: floodfill_timeout,
-        terrainEnabled: terrain
+        terrainEnabled: terrain,
+        fillgroundEnabled: fill_ground
     });
 
     console.log("Generation process started.");
diff --git a/src/args.rs b/src/args.rs
index 046c32d3..59795a03 100644
--- a/src/args.rs
+++ b/src/args.rs
@@ -44,7 +44,9 @@ pub struct Args {
     /// Enable terrain (optional)
     #[arg(long, default_value_t = false, action = clap::ArgAction::SetFalse)]
     pub terrain: bool,
-
+    /// Enable filling ground (optional)
+    #[arg(long, default_value_t = false, action = clap::ArgAction::SetFalse)]
+    pub fillground: bool,
     /// Enable debug mode (optional)
     #[arg(long, default_value_t = false, action = clap::ArgAction::SetTrue)]
     pub debug: bool,
diff --git a/src/data_processing.rs b/src/data_processing.rs
index 1b9e49dd..7cb391a6 100644
--- a/src/data_processing.rs
+++ b/src/data_processing.rs
@@ -1,5 +1,5 @@
 use crate::args::Args;
-use crate::block_definitions::{DIRT, GRASS_BLOCK, SNOW_BLOCK};
+use crate::block_definitions::{BEDROCK, DIRT, GRASS_BLOCK, SNOW_BLOCK, STONE};
 use crate::cartesian::XZPoint;
 use crate::element_processing::*;
 use crate::ground::Ground;
@@ -9,7 +9,7 @@ use crate::world_editor::WorldEditor;
 use colored::Colorize;
 use indicatif::{ProgressBar, ProgressStyle};
 
-const MIN_Y: i32 = -64;
+pub const MIN_Y: i32 = -64;
 
 pub fn generate_world(
     elements: Vec<ProcessedElement>,
@@ -170,6 +170,13 @@ pub fn generate_world(
                 editor.set_block(groundlayer_block, x, max_y, z, None, None);
                 editor.set_block(DIRT, x, max_y - 1, z, None, None);
                 editor.set_block(DIRT, x, max_y - 2, z, None, None);
+                // Fill underground with stone
+                if args.fillground {
+                    for y in MIN_Y + 1..max_y - 2 {
+                        editor.set_block(STONE, x, y, z, None, None);
+                    }
+                }
+                editor.set_block(BEDROCK, x, MIN_Y, z, None, Some(&[BEDROCK]));
 
                 block_counter += 1;
                 if block_counter % batch_size == 0 {
@@ -196,6 +203,7 @@ pub fn generate_world(
                 let ground_level = ground.level(XZPoint::new(x, z));
                 editor.set_block(groundlayer_block, x, ground_level, z, None, None);
                 editor.set_block(DIRT, x, ground_level - 1, z, None, None);
+                editor.set_block(BEDROCK, x, MIN_Y, z, None, Some(&[BEDROCK]));
 
                 block_counter += 1;
                 if block_counter % batch_size == 0 {
diff --git a/src/element_processing/landuse.rs b/src/element_processing/landuse.rs
index e2f1fafc..2a34c46a 100644
--- a/src/element_processing/landuse.rs
+++ b/src/element_processing/landuse.rs
@@ -1,6 +1,7 @@
 use crate::args::Args;
 use crate::block_definitions::*;
 use crate::cartesian::XZPoint;
+use crate::data_processing::MIN_Y;
 use crate::element_processing::tree::create_tree;
 use crate::floodfill::flood_fill_area;
 use crate::ground::Ground;
@@ -363,6 +364,12 @@ pub fn generate_landuse(
                     if random_choice < 5 {
                         editor.set_block(ore_block, x, ground_level, z, Some(&[STONE]), None);
                     }
+                    // Fill everything with stone so dirt won't be there
+                    if args.fillground {
+                        for y in MIN_Y + 1..ground_level {
+                            editor.set_block(STONE, x, y, z, None, None);
+                        }
+                    }
                 }
             }
             _ => {}
diff --git a/src/main.rs b/src/main.rs
index 7c27de2b..6d673fbb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -400,6 +400,7 @@ fn gui_start_generation(
     winter_mode: bool,
     floodfill_timeout: u64,
     terrain_enabled: bool,
+    fillground_enabled: bool,
 ) -> Result<(), String> {
     tauri::async_runtime::spawn(async move {
         if let Err(e) = tokio::task::spawn_blocking(move || {
@@ -427,6 +428,7 @@ fn gui_start_generation(
                 scale: world_scale,
                 ground_level,
                 terrain: terrain_enabled,
+                fillground: fillground_enabled,
                 winter: winter_mode,
                 debug: false,
                 timeout: Some(std::time::Duration::from_secs(floodfill_timeout)),