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+---
+title: Volumes
+description: Guide to making volumes in New Horizons
+---
+
+Volumes are invisible 3D "zones" or "triggers" that cause various effects when objects enter or leave them. For example, `oxygenVolumes` refill the player's oxygen when they enter (used for the various oxygen-generating trees in the game), `forces.directionalVolumes` push players and other physics objects in a specific direction (used by both Nomai artificial gravity surfaces and tractor beams), `revealVolumes` unlock ship log facts when the player enters or observes them (used everywhere in the game), and more.
+
+New Horizons makes adding volumes to your planets easy; just specify them like you would [for a prop](/guides/details/) but under `Volumes` instead of `Props`. For example, to add an oxygen volume at certain location:
+
+```json title="planets/My Cool Planet.json"
+{
+    "$schema": "https://raw.githubusercontent.com/Outer-Wilds-New-Horizons/new-horizons/main/NewHorizons/Schemas/body_schema.json",
+    "name" : "My Cool Planet",
+    "Volumes": {
+        "oxygenVolumes": [
+            {
+                "position": {"x": 399.4909, "y": -1.562098, "z": 20.11444},
+                "radius": 30,
+                "treeVolume": true,
+                "playRefillAudio": true
+            }
+        ]
+    }
+}
+```
+
+Listing out every type of volume is outside the scope of this guide, but you can see every supported type of volume and the properties they need in [the VolumesModule schema](/schemas/body-schema/defs/volumesmodule/).
+
+## Volume Shapes
+
+By default, volumes are spherical, and you can specify the radius of that sphere with the `radius` property. If you want to use a different shape for your volume, such as a box or capsule, you can specify your volume's `shape` like so:
+
+```json title="planets/My Cool Planet.json"
+{
+    "$schema": "https://raw.githubusercontent.com/Outer-Wilds-New-Horizons/new-horizons/main/NewHorizons/Schemas/body_schema.json",
+    "name" : "My Cool Planet",
+    "Volumes": {
+        "forces": {
+            "directionalVolumes": [
+                {
+                    "rename": "ArtificialGravitySurface",
+                    "force": 8,
+                    "playGravityCrystalAudio": true,
+                    "shape": {
+                        "type": "box",
+                        "size": {
+                            "x": 15.0,
+                            "y": 10.0,
+                            "z": 5.0
+                        },
+                        "offset": {
+                            "x": 0,
+                            "y": 5.0,
+                            "z": 0
+                        }
+                    },
+                    "position": { "x": 0, "y": -110, "z": 0 },
+                    "rotation": { "x": 180, "y": 0, "z": 0 }
+                }
+            ]
+        }
+    }
+}
+```
+
+The supported shape types are: `sphere`, `box`, `capsule`, `cylinder`, `cone`, `hemisphere`, `hemicapsule`, and `ring`. See [the ShapeInfo schema](/schemas/body-schema/defs/shapeinfo/) for the full list of properties available to define each shape.
+
+Note that `sphere`, `box`, and `capsule` shapes are more reliable and efficient than other shapes, so prefer using them whenever possible.
+
+### Debugging
+
+To visualize the shapes of your volumes in-game, use the [Collider Visualizer mod](https://outerwildsmods.com/mods/collidervisualizer/). It will display a wireframe of the shapes around you so you can see precisely where they are and reposition or resize them as needed.