diff --git a/core/src/com/unciv/GameStarter.kt b/core/src/com/unciv/GameStarter.kt
index 7a5e97f410..544841fe94 100644
--- a/core/src/com/unciv/GameStarter.kt
+++ b/core/src/com/unciv/GameStarter.kt
@@ -52,7 +52,7 @@ class GameStarter(){
     }
 
     fun getStartingLocations(numberOfPlayers:Int,tileMap: TileMap): Stack<TileInfo> {
-        for(minimumDistanceBetweenStartingLocations in 7 downTo 1){
+        for(minimumDistanceBetweenStartingLocations in 7 downTo 0){
             val freeTiles = tileMap.values
                     .filter { it.isLand() && vectorIsWithinNTilesOfEdge(it.position,3,tileMap)}
                     .toMutableList()
diff --git a/core/src/com/unciv/logic/map/MapUnit.kt b/core/src/com/unciv/logic/map/MapUnit.kt
index c6b7751754..dc4a2f51d7 100644
--- a/core/src/com/unciv/logic/map/MapUnit.kt
+++ b/core/src/com/unciv/logic/map/MapUnit.kt
@@ -329,7 +329,8 @@ class MapUnit {
             city.population.autoAssignPopulation()
             civInfo.addNotification("We have found survivors the ruins - population added to ["+city.name+"]",city.location, Color.GREEN)
         }
-        val researchableAncientEraTechs = GameBasics.Technologies.values.filter { civInfo.tech.canBeResearched(it.name)}
+        val researchableAncientEraTechs = GameBasics.Technologies.values
+                .filter { !civInfo.tech.isResearched(it.name) && civInfo.tech.canBeResearched(it.name)}
         if(researchableAncientEraTechs.isNotEmpty())
             actions.add {
                 val tech = researchableAncientEraTechs.getRandom().name
diff --git a/core/src/com/unciv/logic/map/TileInfo.kt b/core/src/com/unciv/logic/map/TileInfo.kt
index c5e5ef7cfe..70cf636126 100644
--- a/core/src/com/unciv/logic/map/TileInfo.kt
+++ b/core/src/com/unciv/logic/map/TileInfo.kt
@@ -79,7 +79,8 @@ open class TileInfo {
     fun getHeight(): Int {
         var height = 0
         if (listOf("Forest", "Jungle").contains(terrainFeature)) height += 1
-        if ("Hill" == baseTerrain) height += 2
+        if (baseTerrain == "Hill") height += 2
+        if(baseTerrain=="Mountain") height = 4
         return height
     }