diff --git a/parsers/caves.py b/parsers/caves.py
index f70cdcd..34a2301 100644
--- a/parsers/caves.py
+++ b/parsers/caves.py
@@ -165,24 +165,29 @@ def do_ARGE_cave(slug, caveid, url, areacode, svxid):
         print(message)
         return urltest[0]
         
-    numtest = Cave.objects.filter(unofficial_number=caveid.upper())
+    numtest = Cave.objects.filter(unofficial_number=caveid.upper(), areacode=areacode)
     if numtest:
-        message = f" ! Cave {numtest[0]} already exists with this unofficial_number {caveid.upper()}. Can't create new ARGE cave {slug}"
+        message = f" ! Cave {numtest[0]} already exists with this areacode {areacode} and unofficial_number {caveid.upper()}. Can't create new ARGE cave {slug}"
         DataIssue.objects.create(parser="caves", message=message, url=url)
         print(message)
         return numtest[0]
 
-    cave = Cave(
-        unofficial_number=caveid.upper(),
-        kataster_number=caveid.upper(), # should only set this if all digits
-        underground_description="ARGE cave.",
-        survex_file= f"{svxid}.svx",
-        url=url,
-        notes=default_note,
-        areacode=areacode,
+    cave = Cave( 
+    underground_description="ARGE cave.",
+    survex_file= f"{svxid}.svx",
+    url=url,
+    notes=default_note,
+    areacode=areacode,
     )
     if cave:
-        cave.save()  # must save to have id before foreign keys work. This is also a ManyToMany key.
+        try:
+            kn = int(caveid)
+            cave.kataster_number=kn # should only set this if all digit
+        except:
+            # must be unofficial 'number' or name
+            cave.unofficial_number=caveid.upper()
+   
+        cave.save() 
 
         try:  # Now create a cave slug ID
             CaveSlug.objects.update_or_create(cave=cave, slug=slug, primary=False)
@@ -521,7 +526,7 @@ def read_cave(filename, cave=None):
                 # print(f"! Entrance {eslug}")
             if eslug.endswith('a b'):
                 message = f' - Entrance has weird name slug:"{eslug}" cave:"{cave}" caveslug:"{slug}" filename:"cave_data/{filename}"'
-                DataIssue.objects.create(parser="xEntrances", message=message, url=f"{cave.areacode}/{cave.areacode}-{cave.url}_cave_edit/")
+                DataIssue.objects.create(parser="xEntrances", message=message, url=f"{cave.url}_cave_edit/")
                 # print(message)        
 
             letter = getXML(e, "letter", maxItems=1, context=context)[0]
@@ -532,7 +537,7 @@ def read_cave(filename, cave=None):
                 if letter.lower() not in list(string.ascii_lowercase):
                     letter = "x"
                 message = f"- Warning - Empty 'letter' field for '{eslug}' in multiple-entrance cave '{cave}', setting to {letter}."         
-                DataIssue.objects.create(parser="entrances", message=message, url=f"{cave.areacode}/{cave.areacode}-{cave.url}_cave_edit/")
+                DataIssue.objects.create(parser="entrances", message=message, url=f"{cave.url}_cave_edit/")
                 print(message)   
 
             if len(entrances) == 1 and not eslug:  # may be empty: <entranceslug></entranceslug>
@@ -550,7 +555,7 @@ def read_cave(filename, cave=None):
                         entrances_xslug[eslug] = entrance
                     except:
                         message = f"! Fail entrance loading {eslug}  /entrance_data/{eslug} file does not exist or loading it failed."         
-                        DataIssue.objects.create(parser="entrances", message=message, url=f"{cave.areacode}/{cave.areacode}-{cave.url}_cave_edit/")
+                        DataIssue.objects.create(parser="entrances", message=message, url=f"{cave.url}_cave_edit/")
                         print(message)   
                         return                        
 
diff --git a/templates/survexdir.html b/templates/survexdir.html
index e6854ef..a0fa1c2 100644
--- a/templates/survexdir.html
+++ b/templates/survexdir.html
@@ -12,7 +12,7 @@
 <tr><th>Cave</th><th>Cave primary</th><th>f.primary</th><th>f.path</th></tr>
 {% for f in survexfiles %}
     <tr>       
-<td><a href="/cave/{{f.cave}}">{{f.cave}}</a> {{f.cave.areacode}}{f.cave.subarea}}</td>
+<td><a href="/cave/{{f.cave}}">{{f.cave}}</a> {{f.cave.areacode}}{% if f.cave.subarea %}-{{f.cave.subarea}}{% endif %}</td>
 <td>{{f.cave.survex_file}}</td>
 <td> {{f.primary}}.svx</td>
 <td><span {% if f.pathbad %} style="color:red" {% endif %}><a href="/survexfile/{{f.path}}.svx">{{f.path}}.svx</a></span></td>
diff --git a/templates/svxfile.html b/templates/svxfile.html
index d3e18ed..8c2d367 100644
--- a/templates/svxfile.html
+++ b/templates/svxfile.html
@@ -81,7 +81,7 @@ LOGMESSAGES
 {% endif %}
 </div>
 underground survey length: {{svxlength|floatformat:2}} metres<br />
-cave primary survexfile <a href="/survexfile/{{ survexfile.cave.survex_file }}">{{survexfile.cave.survex_file}}</a> <br>
+<a href="/{{survexfile.cave.url}}">cave</a> primary survexfile <a href="/survexfile/{{ survexfile.cave.survex_file }}">{{survexfile.cave.survex_file}}</a> <br>
 directory primary survexfile <a href="/survexfile/{{survexfile.primary}}.svx">{{survexfile.primary}}</a> <br />
 {% for sb in svxblocks %}
 block <em>{{sb}}</em> has parent block <em>{{sb.parent}}</em> (in file {{sb.parent.survexfile.path}}.svx)<br />