diff --git a/cave_data/1623-2015-DL-02.html b/cave_data/1623-2015-dl-02.html
similarity index 93%
rename from cave_data/1623-2015-DL-02.html
rename to cave_data/1623-2015-dl-02.html
index f2213df0a..c3f49fc6f 100644
--- a/cave_data/1623-2015-DL-02.html
+++ b/cave_data/1623-2015-dl-02.html
@@ -17,7 +17,6 @@ the form documented at
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-2015-DL-02</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
 <official_name>Chossy Death Slope H&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
 <area>1623</area><!-- e.g. "1623" -->
 <kataster_code></kataster_code><!-- 'length-or-depth/type exploration'
@@ -40,7 +39,6 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
 
 <entrance>
   <entranceslug>1623-2015-dl-02</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <!-- DEBUG  1623-2015-DL-02+1623-2015-dl-02 'Z' == -->
   <letter></letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
 </entrance>
 
@@ -61,7 +59,6 @@ Dan Lenartowicz</explorers><!-- 'CUCC Expo' and year(s) of exploration. To disti
 <extent></extent>
 
 <description_file></description_file><!-- Path of top-level description file for this cave, when a separate file is used. Otherwise blank. -->
-<url>1623/2015-DL-02/2015-DL-02.html</url><!-- (Required). Relative URL of this cave. i.e the URL this cave appears at on the website, not including 'https://expo.survex.com/. Normally area/cavenum., e.g ('1623/000')-->
 </cave>
 </body>
 </html>