diff --git a/cmake/sourcelist.cmake b/cmake/sourcelist.cmake
index 3b62697f8..88c09ccb5 100644
--- a/cmake/sourcelist.cmake
+++ b/cmake/sourcelist.cmake
@@ -191,6 +191,7 @@ set(SOURCES
 	include/RE/B/BGSStoryManagerTreeForm.h
 	include/RE/B/BGSStoryTeller.h
 	include/RE/B/BGSTalkingActivator.h
+	include/RE/B/BGSTerrainManager.h
 	include/RE/B/BGSTextureModel.h
 	include/RE/B/BGSTextureSet.h
 	include/RE/B/BGSTypedItem.h
diff --git a/include/RE/B/BGSTerrainManager.h b/include/RE/B/BGSTerrainManager.h
new file mode 100644
index 000000000..cc462d909
--- /dev/null
+++ b/include/RE/B/BGSTerrainManager.h
@@ -0,0 +1,42 @@
+#pragma once
+
+namespace RE
+{
+	class BGSTerrainManager
+	{
+	public:
+		std::uint64_t unk00;           // 00
+		std::uint64_t unk08;           // 08
+		std::uint64_t unk10;           // 10
+		std::uint64_t unk18;           // 18
+		std::uint64_t unk20;           // 20
+		std::uint64_t unk28;           // 28
+		std::uint8_t  unk30;           // 30
+		std::uint8_t  unk31;           // 31
+		bool          lodTreesHidden;  // 32
+		std::uint8_t  unk33;           // 33
+		std::uint8_t  unk34;           // 34
+		std::uint8_t  unk35;           // 35
+		std::uint8_t  unk36;           // 36
+		std::uint8_t  unk37;           // 37
+		std::uint64_t unk38;           // 38
+		std::uint64_t unk40;           // 40
+		std::uint64_t unk48;           // 48
+		std::uint64_t unk50;           // 50
+		std::uint64_t unk58;           // 58
+		std::uint64_t unk60;           // 60
+		std::uint64_t unk68;           // 68
+		std::uint64_t unk70;           // 70
+		std::uint64_t unk78;           // 78
+		std::uint64_t unk80;           // 80
+		std::uint64_t unk88;           // 88
+		std::uint64_t unk90;           // 90
+		std::uint64_t unk98;           // 98
+		std::uint64_t unkA0;           // A0
+		std::uint64_t unkA8;           // A8
+		std::uint64_t unkB0;           // B0
+		std::uint64_t unkB8;           // B8
+		std::uint64_t unkC0;           // C0
+	};
+	static_assert(sizeof(BGSTerrainManager) == 0xC8);
+}
diff --git a/include/RE/M/MapMenu.h b/include/RE/M/MapMenu.h
index d284457d6..34bc99a2d 100644
--- a/include/RE/M/MapMenu.h
+++ b/include/RE/M/MapMenu.h
@@ -50,29 +50,26 @@ namespace RE
 		}
 
 		// members
-		BSTSmartPointer<MapMoveHandler> moveHandler;   // 00040
-		BSTSmartPointer<MapLookHandler> lookHandler;   // 00048
-		BSTSmartPointer<MapZoomHandler> zoomHandler;   // 00050
-		ObjectRefHandle                 mapMarker;     // 00058
-		LocalMapMenu                    localMapMenu;  // 00060
-		RefHandle                       unk30460;      // 30460
-		std::uint32_t                   unk30464;      // 30464
-		std::uint32_t                   unk30468;      // 30468
-		std::uint32_t                   unk3046C;      // 3046C
-		BSTArray<void*>                 unk30470;      // 30470
-		BSTArray<void*>                 unk30488;      // 30488
-		MapCamera                       camera;        // 304A0
-		std::uint64_t                   unk30530;      // 30530
-		TESWorldSpace*                  worldSpace;    // 30538
-		GFxValue                        unk30540;      // 30540
-		std::uint64_t                   unk30558;      // 30558
-		std::uint64_t                   unk30560;      // 30560
-		std::uint64_t                   unk30568;      // 30568
-		std::uint32_t                   unk30570;      // 30570
-		BSSoundHandle                   unk30574;      // 30574
-		std::uint64_t                   unk30580;      // 30580
-		std::uint64_t                   unk30588;      // 30588
-		std::uint64_t                   unk30590;      // 30590
+		BSTSmartPointer<MapMoveHandler> moveHandler;           // 00040
+		BSTSmartPointer<MapLookHandler> lookHandler;           // 00048
+		BSTSmartPointer<MapZoomHandler> zoomHandler;           // 00050
+		ObjectRefHandle                 mapMarker;             // 00058
+		LocalMapMenu                    localMapMenu;          // 00060
+		RefHandle                       unk30460;              // 30460
+		NiPoint3                        playerMarkerPosition;  // 30464
+		BSTArray<void*>                 unk30470;              // 30470
+		BSTArray<void*>                 unk30488;              // 30488
+		MapCamera                       camera;                // 304A0
+		std::uint64_t                   unk30530;              // 30530
+		TESWorldSpace*                  worldSpace;            // 30538
+		GFxValue                        unk30540;              // 30540
+		std::uint32_t                   unk30558;              // 30558
+		NiPoint3                        unk3055C;              // 3055C
+		NiPoint3                        unk30568;              // 30568
+		BSSoundHandle                   unk30574;              // 30574
+		std::uint64_t                   unk30580;              // 30580
+		std::uint64_t                   unk30588;              // 30588
+		std::uint64_t                   unk30590;              // 30590
 	};
 	static_assert(sizeof(MapMenu) == 0x30598);
 }
diff --git a/include/RE/Skyrim.h b/include/RE/Skyrim.h
index ce4db14df..6e0bddf22 100644
--- a/include/RE/Skyrim.h
+++ b/include/RE/Skyrim.h
@@ -194,6 +194,7 @@
 #include "RE/B/BGSStoryManagerTreeForm.h"
 #include "RE/B/BGSStoryTeller.h"
 #include "RE/B/BGSTalkingActivator.h"
+#include "RE/B/BGSTerrainManager.h"
 #include "RE/B/BGSTextureModel.h"
 #include "RE/B/BGSTextureSet.h"
 #include "RE/B/BGSTypedItem.h"