diff --git a/gemp-lotr/gemp-lotr-cards/src/main/java/com/gempukku/lotro/cards/set20/site/Card20_431.java b/gemp-lotr/gemp-lotr-cards/src/main/java/com/gempukku/lotro/cards/set20/site/Card20_431.java
new file mode 100644
index 000000000..adf6b5ba4
--- /dev/null
+++ b/gemp-lotr/gemp-lotr-cards/src/main/java/com/gempukku/lotro/cards/set20/site/Card20_431.java
@@ -0,0 +1,51 @@
+package com.gempukku.lotro.cards.set20.site;
+
+import com.gempukku.lotro.cards.AbstractSite;
+import com.gempukku.lotro.cards.PlayConditions;
+import com.gempukku.lotro.cards.effects.AddUntilEndOfTurnModifierEffect;
+import com.gempukku.lotro.cards.modifiers.MoveLimitModifier;
+import com.gempukku.lotro.common.Block;
+import com.gempukku.lotro.common.CardType;
+import com.gempukku.lotro.common.Keyword;
+import com.gempukku.lotro.filters.Filters;
+import com.gempukku.lotro.game.PhysicalCard;
+import com.gempukku.lotro.game.state.LotroGame;
+import com.gempukku.lotro.logic.actions.RequiredTriggerAction;
+import com.gempukku.lotro.logic.timing.EffectResult;
+import com.gempukku.lotro.logic.timing.UnrespondableEffect;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Gap of Rohan
+ * 3	1
+ * Plains. Sanctuary.
+ * While you can spot a mounted companion, the move limit for this turn is +1.
+ */
+public class Card20_431 extends AbstractSite {
+    public Card20_431() {
+        super("Gap of Rohan", Block.SECOND_ED, 3, 1, null);
+        addKeyword(Keyword.PLAINS);
+        addKeyword(Keyword.SANCTUARY);
+    }
+
+    @Override
+    public List<RequiredTriggerAction> getRequiredAfterTriggers(LotroGame game, EffectResult effectResult, final PhysicalCard self) {
+        if (self.getWhileInZoneData() == null && PlayConditions.canSpot(game, CardType.COMPANION, Filters.mounted)) {
+            RequiredTriggerAction action = new RequiredTriggerAction(self);
+            action.appendEffect(
+                    new UnrespondableEffect() {
+                        @Override
+                        protected void doPlayEffect(LotroGame game) {
+                            self.setWhileInZoneData(new Object());
+                        }
+                    });
+            action.appendEffect(
+                    new AddUntilEndOfTurnModifierEffect(
+                            new MoveLimitModifier(self, 1)));
+            return Collections.singletonList(action);
+        }
+        return null;
+    }
+}