diff --git a/parsers/caves.py b/parsers/caves.py
index 5c6b5ac..b376801 100644
--- a/parsers/caves.py
+++ b/parsers/caves.py
@@ -146,10 +146,13 @@ def create_new_cave(svxpath):
     # double check
     if a[0:3] == "162":
         areanum = a[0:4]
-        url = f"{areanum}/{a[5:]}.html"  # Note we are appending the .html as we are believe in backwards compatability.
-    else:
+        url = f"{areanum}/{caveid}.html"  # Note we are appending the .html as we are believe in backwards compatability.
+        #url = f"{areanum}/{a[5:]}.html"  # This is original code, but a above is only defined as being 4 characters long, so it did not make sense and produced non unique urls
+    else: 
+        print(f"WARNING: parsers/caves/create_new_cave called with svxpath '{svxpath}'.  Surely it should start 'caves-162*'?")
         areanum = "1623"
-        url = f"1623/{k}.html"
+        url = f"1623/{caveid}.html"
+        #url = f"1623/{k}.html" # This is original code, but a above is only defined as being 4 characters long, so it did not make sense and produced non unique urls
         
     k = f"{areanum}-{caveid}"
     area = get_area(areanum)