diff --git a/index.html b/index.html
index f4c9bda7..39e59bf3 100644
--- a/index.html
+++ b/index.html
@@ -3287,6 +3287,7 @@
         <button id="addNewBurg" data-tip="Add a new burg. Hold Shift to add multiple" class="icon-plus"></button>
         <button id="burgsExport" data-tip="Save burgs-related data as a text file (.csv)" class="icon-download"></button>
         <button id="burgNamesImport" data-tip="Rename burgs in bulk" class="icon-upload"></button>
+        <button id="burgsLockAll" data-tip="Lock / Unlock all burgs" class="icon-lock"></button>
         <button id="burgsRemoveAll" data-tip="Remove all unlocked burgs except for capitals. To remove a capital remove its state first" class="icon-trash"></button>
       </div>
     </div>
diff --git a/modules/ui/burgs-overview.js b/modules/ui/burgs-overview.js
index 97093035..11006a03 100644
--- a/modules/ui/burgs-overview.js
+++ b/modules/ui/burgs-overview.js
@@ -8,6 +8,7 @@ function overviewBurgs() {
   const body = document.getElementById("burgsBody");
   updateFilter();
   burgsOverviewAddLines();
+  setLockIcon();
   $("#burgsOverview").dialog();
 
   if (modules.overviewBurgs) return;
@@ -33,6 +34,8 @@ function overviewBurgs() {
   document.getElementById("burgsListToLoad").addEventListener("change", function () {
     uploadFile(this, importBurgNames);
   });
+  document.getElementById("burgsLockAll").addEventListener("click", setLockBurgs);
+  document.getElementById("burgsLockAll").addEventListener("click", setLockIcon);
   document.getElementById("burgsRemoveAll").addEventListener("click", triggerAllBurgsRemove);
   document.getElementById("burgsInvertLock").addEventListener("click", invertLock);
 
@@ -87,7 +90,7 @@ function overviewBurgs() {
         <input data-tip="Burg name. Click and type to change" class="burgName" value="${b.name}" autocorrect="off" spellcheck="false">
         <input data-tip="Burg province" class="burgState" value="${province}" disabled>
         <input data-tip="Burg state" class="burgState" value="${state}" disabled>
-        <select data-tip="Dominant culture. Click to change burg culture (to change cell cultrure use Cultures Editor)" class="stateCulture">${getCultureOptions(
+        <select data-tip="Dominant culture. Click to change burg culture (to change cell culture use Cultures Editor)" class="stateCulture">${getCultureOptions(
           b.culture
         )}</select>
         <span data-tip="Burg population" class="icon-male"></span>
@@ -562,4 +565,41 @@ function overviewBurgs() {
     pack.burgs = pack.burgs.map(burg => ({...burg, lock: !burg.lock}));
     burgsOverviewAddLines();
   }
+  
+  function lockAllBurgs() {
+	pack.burgs.forEach(burg => {
+		burg.lock = true;
+		});
+    burgsOverviewAddLines();
+  }
+  
+  function unlockAllBurgs() {
+	pack.burgs.forEach(burg => {
+		burg.lock = false;
+		});
+    burgsOverviewAddLines();
+  }
+  
+  function setLockBurgs() {
+    const allLocked = pack.burgs.every(({lock, i, removed}) => lock || !i || removed);
+
+    if (allLocked) {
+    unlockAllBurgs();
+    } else {
+    lockAllBurgs();
+           }
+    setLockIcon();
+  }
+  
+  function setLockIcon() {
+	const allLocked = pack.burgs.every(({lock, i, removed}) => lock || !i || removed);
+
+	if (allLocked) {
+      burgsLockAll.classList.remove("icon-lock");
+      burgsLockAll.classList.add("icon-lock-open");
+    } else {
+      burgsLockAll.classList.add("icon-lock");
+      burgsLockAll.classList.remove("icon-lock-open");  
+         }
+  }
 }