diff --git a/cave_data/1623-2004-06.html b/cave_data/1623-2004-06.html
index 02d513832..e6f64460e 100644
--- a/cave_data/1623-2004-06.html
+++ b/cave_data/1623-2004-06.html
@@ -46,7 +46,7 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
 <explorers>CUCC 2004 (Olly, Jenny)</explorers><!-- 'CUCC Expo' and year(s) of exploration. To distinguish from caves explored by foreign groups. Individual names can be given too if it was a small cave. -->
 <survex_file></survex_file><!-- Name of top-level survey file for this cave. Relative to the 'loser' survex repository. So for most caves that's "caves-162x/cavenum/cavnum.svx". (e.g. caves-1623/204/204.svx -->
 <underground_description>Not descended. <br>
-<img=https://expo.survex.com/years/2004/2004-06sketch.jpg></underground_description><!-- Underground description. (description of approach and entrance goes in entrance file). For a small cave this will be the entire description. For larger caves it will be the front page of the description, or a short intro, containing links to other pages with the cave description in, or even nothing but a link. -->
+<img="/years/2004/2004-06sketch.jpg"></underground_description><!-- Underground description. (description of approach and entrance goes in entrance file). For a small cave this will be the entire description. For larger caves it will be the front page of the description, or a short intro, containing links to other pages with the cave description in, or even nothing but a link. -->
 <equipment></equipment><!-- For a small cave, summary of gear needed to descend. For longer caves it could be blank, a table, or just refer to the description/topos. Leave blank if this info is in the description. -->
 <references><a href="/years/2004/logbook.html#t2004-07-31B">2004 log book</a></references><!-- References to documentation. Could be Journal articles or Logbook entries. Can be links if the docs are online. -->
 <survey>Sketch in logbook</survey><!-- Drawn-up surveys. Scans of paper surveys or images/PDFs of electronic surveys. Should include HTML to display current plan and elevation, with links to larger versions (See section on URLs and files). Could list links to multiple years of survey, or even a separate survey page if it's complicated enough. -->