diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd273919..eed52362 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## [Unreleased](https://github.com/LostArtefacts/TR-Rando/compare/V1.9.1...master) - xxxx-xx-xx
 - fixed docile bird monsters causing multiple Laras to spawn in remastered levels (#723)
 - fixed the incomplete skidoo model in TR2R when it appears anywhere other than Tibetan Foothills (#721)
+- fixed secrets on triangle portals not triggering in TR3 (#727)
 - improved data integrity checks when opening a folder and prior to randomization (#719)
 
 ## [V1.9.1](https://github.com/LostArtefacts/TR-Rando/compare/V1.9.0...V1.9.1) - 2024-06-23
diff --git a/TRRandomizerCore/Randomizers/Shared/SecretArtefactPlacer.cs b/TRRandomizerCore/Randomizers/Shared/SecretArtefactPlacer.cs
index a45ef869..63844e82 100644
--- a/TRRandomizerCore/Randomizers/Shared/SecretArtefactPlacer.cs
+++ b/TRRandomizerCore/Randomizers/Shared/SecretArtefactPlacer.cs
@@ -235,6 +235,11 @@ private void CreateSecretTriggers(TRSecretPlacement<T> secret, short room, TRRoo
         while (mainSector.RoomBelow != TRConsts.NoRoom)
         {
             // Ensure we go as far down as possible - for example, Atlantis room 47 sector 10,9 - but stay in the same room
+            // Don't traverse down if it's a TR3 triangle portal. This assumes the secret would never be mid-air over the portal.
+            if (mainSector.FDIndex != 0 && _floorData[mainSector.FDIndex].Any(e => e is FDTriangulationEntry t && t.IsFloorPortal))
+            {
+                break;
+            }
             location.Y = (mainSector.Floor + 1) * TRConsts.Step1;
             location.Room = mainSector.RoomBelow;
             mainSector = _sectorGetter(location);
diff --git a/TRRandomizerCore/Resources/TR3/Locations/locations.json b/TRRandomizerCore/Resources/TR3/Locations/locations.json
index cdd1cd69..4b252a3c 100644
--- a/TRRandomizerCore/Resources/TR3/Locations/locations.json
+++ b/TRRandomizerCore/Resources/TR3/Locations/locations.json
@@ -2541,9 +2541,9 @@
       "Room": 90
     },
     {
-      "X": 52486,
-      "Y": -5120,
-      "Z": 51462,
+      "X": 52895,
+      "Y": -4711,
+      "Z": 51965,
       "Room": 73,
       "Difficulty": "Hard"
     },