diff --git a/core/src/mindustry/content/SectorPresets.java b/core/src/mindustry/content/SectorPresets.java
index 78274ae1e2..1253ed6417 100644
--- a/core/src/mindustry/content/SectorPresets.java
+++ b/core/src/mindustry/content/SectorPresets.java
@@ -13,8 +13,6 @@ public class SectorPresets{
     impact0078, desolateRift, nuclearComplex, planetaryTerminal,
     coastline, navalFortress, weatheredChannels, seaPort,
 
-    geothermalStronghold, cruxscape,
-
     onset, aegis, lake, intersect, basin, atlas, split, marsh, peaks, ravine, caldera,
     stronghold, crevice, siege, crossroads, karst, origin;
 
@@ -161,12 +159,18 @@ public class SectorPresets{
             isLastSector = true;
         }};
 
-        geothermalStronghold = new SectorPreset("geothermalStronghold", serpulo, 264){{
+        //TODO: show up differently with PLT selected.
+
+        new SectorPreset("geothermalStronghold", serpulo, 264){{
+            requireUnlock = false;
             difficulty = 10;
+            showHidden = true;
         }};
 
-        cruxscape = new SectorPreset("cruxscape", serpulo, 54){{
+        new SectorPreset("cruxscape", serpulo, 54){{
+            requireUnlock = false;
             difficulty = 10;
+            showHidden = true;
         }};
 
         SectorSubmissions.registerSectors();
diff --git a/core/src/mindustry/content/SerpuloTechTree.java b/core/src/mindustry/content/SerpuloTechTree.java
index f8ebcea4d9..dbb7b2e982 100644
--- a/core/src/mindustry/content/SerpuloTechTree.java
+++ b/core/src/mindustry/content/SerpuloTechTree.java
@@ -521,29 +521,7 @@ public class SerpuloTechTree{
                                                 new Research(exponentialReconstructor),
                                                 new Research(tetrativeReconstructor)
                                                 ), () -> {
-                                                    node(geothermalStronghold, Seq.with(
-                                                    new Research(omura),
-                                                    new Research(navanax),
-                                                    new Research(eclipse),
-                                                    new Research(oct),
-                                                    new Research(reign),
-                                                    new Research(corvus),
-                                                    new Research(toxopid)
-                                                    ), () -> {
 
-                                                    });
-
-                                                    node(cruxscape, Seq.with(
-                                                    new Research(omura),
-                                                    new Research(navanax),
-                                                    new Research(eclipse),
-                                                    new Research(oct),
-                                                    new Research(reign),
-                                                    new Research(corvus),
-                                                    new Research(toxopid)
-                                                    ), () -> {
-
-                                                    });
                                                 });
                                             });
                                         });
diff --git a/core/src/mindustry/entities/comp/BuilderComp.java b/core/src/mindustry/entities/comp/BuilderComp.java
index 33413231cd..5d2b2837fb 100644
--- a/core/src/mindustry/entities/comp/BuilderComp.java
+++ b/core/src/mindustry/entities/comp/BuilderComp.java
@@ -155,7 +155,7 @@ abstract class BuilderComp implements Posc, Statusc, Teamc, Rotc{
             if(!within(tile, finalPlaceDst)) continue;
 
             if(!headless){
-                Vars.control.sound.loop(Sounds.loopBuild, tile, 1.2f);
+                Vars.control.sound.loop(Sounds.loopBuild, tile, 1.3f);
             }
 
             if(!(tile.build instanceof ConstructBuild cb)){
diff --git a/core/src/mindustry/type/Sector.java b/core/src/mindustry/type/Sector.java
index ee7b3f88f8..a5adb64529 100644
--- a/core/src/mindustry/type/Sector.java
+++ b/core/src/mindustry/type/Sector.java
@@ -146,7 +146,9 @@ public class Sector{
     }
 
     public String name(){
-        if(preset != null && info.name == null && preset.requireUnlock) return preset.localizedName;
+        if(preset != null && info.name == null && (preset.requireUnlock || preset.showHidden)){
+            return preset.localizedName;
+        }
         //single-sector "planets" use their own name for the sector name.
         if(info.name == null && planet.sectors.size == 1){
             return planet.localizedName;
@@ -161,7 +163,7 @@ public class Sector{
 
     @Nullable
     public TextureRegion icon(){
-        return info.contentIcon != null ? info.contentIcon.uiIcon : info.icon == null ? (preset != null && preset.requireUnlock && preset.uiIcon.found() && preset.unlocked() ? preset.uiIcon : null) : Fonts.getLargeIcon(info.icon);
+        return info.contentIcon != null ? info.contentIcon.uiIcon : info.icon == null ? (preset != null && preset.requireUnlock && preset.unlocked() && preset.uiIcon.found() ? preset.uiIcon : null) : Fonts.getLargeIcon(info.icon);
     }
 
     @Nullable
diff --git a/core/src/mindustry/type/SectorPreset.java b/core/src/mindustry/type/SectorPreset.java
index fa283b1e78..77b0484d50 100644
--- a/core/src/mindustry/type/SectorPreset.java
+++ b/core/src/mindustry/type/SectorPreset.java
@@ -25,6 +25,8 @@ public class SectorPreset extends UnlockableContent{
     public boolean isLastSector;
     /** If true, this sector must be unlocked before landing is permitted. */
     public boolean requireUnlock = true;
+    /** If true, the icon and name is shown, even when it's a 'hidden' always-unlocked sector. TODO: this field may be changed, not sure how it should work*/
+    public boolean showHidden = false;
     public boolean showSectorLandInfo = true;
     /** If true, uses this sector's launch fields instead */
     public boolean overrideLaunchDefaults = false;
diff --git a/core/src/mindustry/ui/dialogs/PlanetDialog.java b/core/src/mindustry/ui/dialogs/PlanetDialog.java
index 59e02f96d0..f5526fc655 100644
--- a/core/src/mindustry/ui/dialogs/PlanetDialog.java
+++ b/core/src/mindustry/ui/dialogs/PlanetDialog.java
@@ -536,8 +536,8 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
                 var preficon = sec.icon();
                 var icon =
                     sec.isAttacked() ? Fonts.getLargeIcon("warning") :
-                    !sec.hasBase() && sec.preset != null && sec.preset.requireUnlock && sec.preset.unlocked() && preficon == null ?
-                    (sec.preset != null && sec.preset.requireUnlock && sec.preset.unlocked() ? sec.preset.uiIcon : Fonts.getLargeIcon("terrain")) :
+                    !sec.hasBase() && sec.preset != null && ((sec.preset.requireUnlock && sec.preset.unlocked()) || (sec.preset.showHidden && mode == planetLaunch)) && preficon == null ?
+                    (sec.preset != null && ((sec.preset.requireUnlock && sec.preset.unlocked()) || sec.preset.showHidden) ? sec.preset.uiIcon : Fonts.getLargeIcon("terrain")) :
                     sec.preset != null && sec.preset.requireUnlock && sec.preset.locked() && sec.preset.techNode != null && (sec.preset.techNode.parent == null || !sec.preset.techNode.parent.content.locked()) ? Fonts.getLargeIcon("lock") :
                     preficon;
                 var color = sec.isAttacked() ? Team.sharded.color : Color.white;