diff --git a/1623/2004-01/ent.jpg b/1623/269/ent.jpg
similarity index 100%
rename from 1623/2004-01/ent.jpg
rename to 1623/269/ent.jpg
diff --git a/1623/2004-01/ent_small.jpg b/1623/269/ent_small.jpg
similarity index 100%
rename from 1623/2004-01/ent_small.jpg
rename to 1623/269/ent_small.jpg
diff --git a/1623/2004-01/inside.jpg b/1623/269/inside.jpg
similarity index 100%
rename from 1623/2004-01/inside.jpg
rename to 1623/269/inside.jpg
diff --git a/1623/2004-01/inside_small.jpg b/1623/269/inside_small.jpg
similarity index 100%
rename from 1623/2004-01/inside_small.jpg
rename to 1623/269/inside_small.jpg
diff --git a/cave_data/1623-106.html b/cave_data/1623-106.html
index d75fc1c8a..f0e3a1e76 100644
--- a/cave_data/1623-106.html
+++ b/cave_data/1623-106.html
@@ -9,12 +9,12 @@
 <cave>
 <non_public>False</non_public>
 <caveslug>1623-106</caveslug>
-<official_name>Eislufthohle</official_name>
+<official_name>Eislufth&ouml;hle</official_name>
 <area>1623</area>
 <area>1d</area>
-<kataster_code>5/S/E x</kataster_code>
-<kataster_number>76</kataster_number> 
-<unofficial_number>106</unofficial_number>
+<kataster_code></kataster_code>
+<kataster_number>106</kataster_number> 
+<unofficial_number>Numbering cock-up for 76</unofficial_number>
 
 <entrance>
   <entranceslug>1623-106</entranceslug>
@@ -22,19 +22,21 @@
 </entrance>
 
 <explorers></explorers>
-<underground_description>See 76 entry for information</underground_description>
+<underground_description></underground_description>
 <equipment></equipment>
 <references></references>
 <survey></survey>
 <kataster_status></kataster_status>
 <underground_centre_line></underground_centre_line>
-<notes></notes>
+<notes>106 was a mistake - the number was accidentally used by CUCC
+for <a href="../76/76.htm">Eislufth&ouml;hle (76)</a> for a while. But we reverted to the
+Austrian Kataster numbering once the confusion was discovered. So 106 and 76 are two numbers for the same cave.</notes>
 <length></length>
 <depth></depth>
 <extent></extent>
 <survex_file></survex_file>
 <description_file></description_file>
-<url>1623/76/76.html</url>
+<url>1623/106/index.htm</url>
 </cave>
 </body>
 </html>
diff --git a/cave_data/1623-2004-01.html b/cave_data/1623-269.html
similarity index 73%
rename from cave_data/1623-2004-01.html
rename to cave_data/1623-269.html
index d1826c2b4..68ecdcdf5 100644
--- a/cave_data/1623-2004-01.html
+++ b/cave_data/1623-269.html
@@ -8,16 +8,16 @@
 <body>
 <cave>
 <non_public>False</non_public>
-<caveslug>1623-2004-01</caveslug>
+<caveslug>1623-269</caveslug>
 <official_name>Maraehöhle</official_name>
 <area>1623</area>
 <area>1d</area>
 <kataster_code>1/T =</kataster_code>
-<kataster_number></kataster_number> 
+<kataster_number>269</kataster_number> 
 <unofficial_number>2004-01</unofficial_number>
 
 <entrance>
-  <entranceslug>1623-2004-01</entranceslug>
+  <entranceslug>1623-269</entranceslug>
   <letter></letter>
 </entrance>
 
@@ -25,8 +25,8 @@
 <underground_description>Chossy slope heading down hill, with snow plug below skylight. Cold air wells up through floor, presumably through fractures from 99. </underground_description>
 <equipment>None</equipment>
 <references>Email 2005-05-30</references>
-<survey><p><a href="../../expofiles/surveys/2004-01/2004-01-plan-2015.pdf">2015 Plan<br /></a></p>
-<p><a href="../../expofiles/surveys/2004-01/2004-01-elv-2015.pdf">2015 Elevation<br
+<survey><p><a href="../../expofiles/surveys/269/2004-01-plan-2015.pdf">2015 Plan<br /></a></p>
+<p><a href="../../expofiles/surveys/269/2004-01-elv-2015.pdf">2015 Elevation<br
  /></a></p></survey>
 <kataster_status></kataster_status>
 <underground_centre_line></underground_centre_line>
@@ -34,9 +34,9 @@
 <length>14m</length>
 <depth>5m</depth>
 <extent></extent>
-<survex_file>caves-1623/2004-01/2004-01.svx</survex_file>
+<survex_file>caves-1623/269/269.svx</survex_file>
 <description_file></description_file>
-<url>1623/2004-01/index.html</url>
+<url>1623/269/index.html</url>
 </cave>
 </body>
 </html>
diff --git a/entrance_data/1623-2004-01.html b/entrance_data/1623-269.html
similarity index 98%
rename from entrance_data/1623-2004-01.html
rename to entrance_data/1623-269.html
index 2ec0c7971..9562e3e6b 100644
--- a/entrance_data/1623-2004-01.html
+++ b/entrance_data/1623-269.html
@@ -8,7 +8,7 @@
 <body>
 <entrance>
 <non_public>False</non_public>
-<slug>1623-2004-01</slug>
+<slug>1623-269</slug>
 <name></name>
 <entrance_description>Large entrance facing towards ridge (with smaller skylight entrance near 99)</entrance_description>
 <explorers></explorers>
