diff --git a/ChangeLog b/ChangeLog
index 336c70666..2a7de1067 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2021-01-29 Nicolas Weeger
+        * marksel/mines: Add some random ores in the map.
         * navar_city/apartments/apartment: Move diamond altars so stairs appear at the desired place.
+        * world/world_120_109: Add random map with ores.
 
 2021-01-28 Nicolas Weeger
         * quests/peterm/DragonQuest/ElectricHatchery,
diff --git a/marksel/mines b/marksel/mines
index 1b63df60d..ca8796119 100644
--- a/marksel/mines
+++ b/marksel/mines
@@ -9,7 +9,7 @@ enter_x 13
 enter_y 18
 msg
 Created:  2002-12-20 Joel Southall
-Modified: 2012-07-08 Nicolas Weeger
+Modified: 2021-01-29 Nicolas Weeger
 endmsg
 end
 arch cave_15
@@ -709,7 +709,7 @@ arch medium_stones
 x 6
 y 7
 end
-arch rock2
+arch random_ore
 x 6
 y 7
 end
@@ -1739,7 +1739,7 @@ arch medium_stones
 x 15
 y 4
 end
-arch rock2
+arch random_ore
 x 15
 y 4
 end
@@ -2285,6 +2285,10 @@ arch medium_stones
 x 18
 y 11
 end
+arch random_ore
+x 18
+y 11
+end
 arch rubble
 x 18
 y 11
diff --git a/world/world_120_109 b/world/world_120_109
index 0d2ec2782..55079149e 100644
--- a/world/world_120_109
+++ b/world/world_120_109
@@ -4,7 +4,7 @@ region marksel
 width 50
 height 50
 msg
-Modified: 2020-03-14 Rick Tanner
+Modified: 2021-01-29 Nicolas Weeger
 endmsg
 outdoor 1
 tile_path_1 world_120_108
@@ -7168,6 +7168,17 @@ elevation 6634
 end
 arch mountain_cave2
 name mine
+slaying /!
+msg
+floorstyle stones2
+darkness 5
+wallstyle cave3
+exitstyle ladder
+decorstyle ores
+dungeon_depth 5
+orientation 1
+monsterstyle subterranean
+endmsg
 x 27
 y 41
 end