diff --git a/examples/pyramidal_maze.scad b/examples/pyramidal_maze.scad
new file mode 100644
index 00000000..dfb8b99c
--- /dev/null
+++ b/examples/pyramidal_maze.scad
@@ -0,0 +1,97 @@
+include <line2d.scad>;
+include <square_maze.scad>;
+
+maze_rows = 8;
+block_width = 10;
+stairs_width = 5;
+
+module draw_block(wall_type, block_width, wall_thickness) {
+    if(wall_type == UPPER_WALL || wall_type == UPPER_RIGHT_WALL) {
+        // draw a upper wall
+        line2d(
+            [0, block_width], [block_width, block_width], wall_thickness
+        ); 
+    }
+    
+    if(wall_type == RIGHT_WALL || wall_type == UPPER_RIGHT_WALL) {
+        // draw a right wall
+        line2d(
+            [block_width, block_width], [block_width, 0], wall_thickness
+        ); 
+    }
+}
+
+module draw_maze(rows, columns, blocks, block_width, wall_thickness) {
+    for(block = blocks) {
+        // move a block to a right position.
+        translate([get_x(block) - 1, get_y(block) - 1] * block_width) 
+            draw_block(
+                get_wall_type(block), 
+                block_width, 
+                wall_thickness
+            );
+    }
+
+    // the lowermost wall
+    line2d([0, 0], [block_width * columns, 0], 
+         wall_thickness);
+    // the leftmost wall
+    line2d([0, block_width], [0, block_width * rows], 
+         wall_thickness);
+} 
+
+module pyramid_with_stairs(base_width, stairs_width, rows) {
+    height = base_width * sqrt(2) / 2;
+
+    module floor(i) {
+        base_w = base_width - (base_width / rows) * (i - 1) + stairs_width;
+        floor_h = height / rows * 2;
+                
+        stairsteps = rows;
+        staircase_h = floor_h / stairsteps;
+        staircase_w = stairs_width / stairsteps * 2;
+        
+        translate([0, 0, floor_h / 2 * (i - 1)]) 
+            for(j = [1:stairsteps]) {
+                square_w = base_w - j * staircase_w;
+                translate([0, 0, staircase_h * (j - 1)])  
+                    linear_extrude(staircase_h) 
+                        square([square_w, square_w], center = true);
+            }
+    }
+    
+    for(i = [1:2:rows - 1]) {
+        floor(i);
+    }
+}
+
+module pyramidal_staircase_maze(maze_rows, block_width, stairs_width) {
+    maze_blocks = go_maze(
+        1, 1,   // starting point
+        starting_maze(maze_rows, maze_rows),  
+        maze_rows, maze_rows
+    ); 
+    
+    intersection() {
+        pyramid_with_stairs(
+            maze_rows * block_width, stairs_width, maze_rows);
+
+        linear_extrude(maze_rows * block_width * sqrt(2) / 2)  difference() {
+            
+            square([block_width * maze_rows + stairs_width, block_width * maze_rows + stairs_width], center = true);
+            
+            translate([-(maze_rows * block_width) / 2, -(maze_rows * block_width) / 2, 0]) 
+
+            
+            draw_maze(
+                maze_rows, 
+                maze_rows, 
+                maze_blocks, 
+                block_width, 
+                stairs_width
+            );
+        }
+    }
+}
+
+pyramidal_staircase_maze(maze_rows, block_width, stairs_width);
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