diff --git a/graphics/planets/maraxsis-trench.png b/graphics/planets/maraxsis-trench.png
new file mode 100644
index 00000000..2810be91
Binary files /dev/null and b/graphics/planets/maraxsis-trench.png differ
diff --git a/graphics/technology/maraxsis-trench.png b/graphics/technology/maraxsis-trench.png
new file mode 100644
index 00000000..b8618de2
Binary files /dev/null and b/graphics/technology/maraxsis-trench.png differ
diff --git a/locale/en/locale.cfg b/locale/en/locale.cfg
index 4015c6df..079575bb 100644
--- a/locale/en/locale.cfg
+++ b/locale/en/locale.cfg
@@ -9,6 +9,7 @@ description=Dive into the uncharted waters of Maraxsis, a world where the sea co
 
 [space-location-name]
 maraxsis=Maraxsis
+maraxsis-trench=Trench
 
 [space-location-description]
 maraxsis=A planet fully covered by vast oceans. The pressure is extreme here, anything will succumb to the ocean without the protection of a submarine. Preliminary surface scans show an average temperature of 101°F. It's not too hot and not too cold, the perfect Goldilocks zone for liquid water.
diff --git a/prototypes/planet/maraxsis.lua b/prototypes/planet/maraxsis.lua
index 8bf1e6ce..f4d705e8 100644
--- a/prototypes/planet/maraxsis.lua
+++ b/prototypes/planet/maraxsis.lua
@@ -20,18 +20,46 @@ data:extend {maraxsis.merge(data.raw.planet.gleba, {
     solar_power_in_space = 150,
     map_gen_settings = planet_map_gen.maraxsis(),
     distance = 15,
-    orientation = 0.95,
+    draw_orbit = false,
+    orientation = 0.515,
     flying_robot_energy_usage_multiplier = 1.5, -- todo: this doesnt work
 })}
 
+data:extend {maraxsis.merge(data.raw.planet.gleba, {
+    name = "maraxsis-trench",
+    starting_area = 1,
+    surface_properties = {
+        ["day-night-cycle"] = 5 * minute,
+        ["magnetic-field"] = 25,
+        ["solar-power"] = 30,
+        pressure = 200000,
+        gravity = 20,
+    },
+    starmap_icon = "__maraxsis__/graphics/planets/maraxsis-trench.png",
+    starmap_icon_size = 512,
+    icon = "__maraxsis__/graphics/technology/maraxsis-trench.png",
+    icon_size = 256,
+    order = "ce[maraxsis]-[trench]",
+    pollutant_type = "nil",
+    draw_orbit = false,
+    solar_power_in_space = 150,
+    map_gen_settings = planet_map_gen.maraxsis_trench(),
+    distance = 15.6,
+    label_orientation = 0.3,
+    magnitude = 0.65,
+    orientation = 0.5,
+    auto_save_on_first_trip = false,
+    asteroid_spawn_definitions = "nil",
+    flying_robot_energy_usage_multiplier = 1.5, -- todo: this doesnt work
+})}
 
 data:extend {{
     type = "space-connection",
     name = "vulcanus-maraxsis",
     subgroup = "planet-connections",
-    from = "vulcanus",
-    to = "maraxsis",
+    from = "maraxsis",
+    to = "vulcanus",
     order = "f",
-    length = 20000,
+    length = 100000,
     asteroid_spawn_definitions = asteroid_util.spawn_definitions(asteroid_util.gleba_aquilo)
 }}
diff --git a/prototypes/planet/planet-map-gen.lua b/prototypes/planet/planet-map-gen.lua
index 2627c4e1..fb09ae39 100644
--- a/prototypes/planet/planet-map-gen.lua
+++ b/prototypes/planet/planet-map-gen.lua
@@ -13,8 +13,7 @@ planet_map_gen.maraxsis = function()
     {
         terrain_segmentation = 1,
         water = 0,
-        property_expression_names =
-        {
+        property_expression_names = {
             elevation = "maraxsis_elevation",
             temperature = "temperature_basic",
             moisture = "maraxsis_moisture",
@@ -22,23 +21,19 @@ planet_map_gen.maraxsis = function()
             cliffiness = "1",
             cliff_elevation = "cliff_elevation_from_elevation",
         },
-        cliff_settings =
-        {
+        cliff_settings = {
             name = "cliff-maraxsis",
             cliff_elevation_0 = 0.03,
             cliff_elevation_interval = 0.1,
             cliff_smoothing = 0, -- This is critical for correct cliff placement on the trench entrance.
             richness = 0.98
         },
-        autoplace_controls =
-        {
+        autoplace_controls = {
             ["iron-ore"] = {},
         },
         autoplace_settings = {
-            ["tile"] =
-            {
-                settings =
-                {
+            ["tile"] = {
+                settings = {
                     ["maraxsis-trench-entrance"] = {},
                     ["sand-1-underwater"] = {},
                     ["sand-2-underwater"] = {},
@@ -46,10 +41,8 @@ planet_map_gen.maraxsis = function()
                     ["dirt-5-underwater"] = {},
                 }
             },
-            ["decorative"] =
-            {
-                settings =
-                {
+            ["decorative"] = {
+                settings = {
                     ["urchin-cactus"] = {},
 
                     -- nauvis decoratives
@@ -127,4 +120,42 @@ planet_map_gen.maraxsis = function()
     }
 end
 
+planet_map_gen.maraxsis_trench = function()
+    return {
+        terrain_segmentation = 1,
+        water = 0,
+        property_expression_names = {
+            elevation = "maraxsis_elevation",
+            temperature = "temperature_basic",
+            moisture = "maraxsis_moisture",
+            aux = "aux_basic",
+            cliffiness = "1",
+            cliff_elevation = "cliff_elevation_from_elevation",
+        },
+        autoplace_controls = {
+            ["iron-ore"] = {},
+        },
+        autoplace_settings = {
+            ["tile"] = {
+                settings = {
+                    ["maraxsis-trench-entrance"] = {},
+                    ["sand-1-underwater"] = {},
+                    ["sand-2-underwater"] = {},
+                    ["sand-3-underwater"] = {},
+                    ["dirt-5-underwater"] = {},
+                }
+            },
+            ["decorative"] = {
+                settings = {
+                }
+            },
+            ["entity"] = {
+                settings = {
+                    
+                },
+            },
+        }
+    }
+end
+
 return planet_map_gen
diff --git a/prototypes/technology.lua b/prototypes/technology.lua
index 139bd6f6..77bfc2c1 100644
--- a/prototypes/technology.lua
+++ b/prototypes/technology.lua
@@ -12,6 +12,11 @@ data:extend {{
             space_location = "maraxsis",
             use_icon_overlay_constant = true
         },
+        {
+            type = "unlock-space-location",
+            space_location = "maraxsis-trench",
+            use_icon_overlay_constant = true
+        },
         {
             type = "unlock-recipe",
             recipe = "maraxsis-hydro-plant",
diff --git a/scripts/constants.lua b/scripts/constants.lua
index 0afd78cf..d2b0416d 100644
--- a/scripts/constants.lua
+++ b/scripts/constants.lua
@@ -1,8 +1,8 @@
 local TRENCH_MOVEMENT_FACTOR = 2 -- each tile moved in the trench layer = 2 tiles in the surface layer
 
 local SUBMARINES = {
-    ["maraxsis-diesel-submarine"] = true,
-    ["maraxsis-nuclear-submarine"] = true,
+    ["maraxsis-diesel-submarine"] = {r = 255, g = 195, b = 0, a = 0.5},
+    ["maraxsis-nuclear-submarine"] = {r = 0.3, g = 0.8, b = 0.3, a = 0.5},
 }
 
 local TRENCH_SURFACE_NAME = "Trench"
diff --git a/scripts/map-gen/surfaces/maraxsis-trench.lua b/scripts/map-gen/surfaces/maraxsis-trench.lua
index af5d2c77..3208901a 100644
--- a/scripts/map-gen/surfaces/maraxsis-trench.lua
+++ b/scripts/map-gen/surfaces/maraxsis-trench.lua
@@ -1,41 +1,5 @@
 local function get_surface()
-	local surface = game.surfaces[maraxsis.TRENCH_SURFACE_NAME]
-
-	if not surface then
-		surface = game.create_surface(maraxsis.TRENCH_SURFACE_NAME, {
-			seed = maraxsis.prototypes[maraxsis.MARAXSIS_SURFACE_NAME].get_surface().map_gen_settings.seed,
-			autoplace_settings = {
-				entity = {
-					treat_missing_as_default = false,
-					maraxsis_trench_wall = {},
-				},
-				tile = {
-					treat_missing_as_default = false,
-				},
-				decorative = {
-					treat_missing_as_default = false,
-				},
-			},
-			cliff_settings = {
-				cliff_elevation_0 = 1024
-			}
-		})
-
-		surface.daytime = 0.5
-		surface.freeze_daytime = true
-		surface.show_clouds = false
-		surface.brightness_visual_weights = {r = 1, g = 1, b = 1}
-		surface.min_brightness = 0
-	end
-
-	return surface
-end
-
--- uses game.player, call this from the ingame terminal
-function teleport_to_maraxsis_trench()
-	local player = game.player
-	local surface = get_surface()
-	player.teleport({0, 0}, surface)
+	return game.surfaces[maraxsis.TRENCH_SURFACE_NAME]
 end
 
 return {