diff --git a/cave_data/1623-2012-ns-15.html b/cave_data/1623-2012-ns-15.html
index ab9d42c70..245134f17 100644
--- a/cave_data/1623-2012-ns-15.html
+++ b/cave_data/1623-2012-ns-15.html
@@ -36,11 +36,6 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
   <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>
 
-<entrance>
-  <entranceslug>1623-2012-ns-15</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 -->
-  <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>
-
 <explorers>Julian Todd,Noel Snape</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. -->
 <underground_description><a href="/logbookentry/2012-08-20/t2012-08-20a_surface_pr">Logbook 2012-08-20</a></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. -->
diff --git a/cave_data/1623-2018-pf-01.html b/cave_data/1623-2018-pf-01.html
index 90625fb15..ac54e98e4 100644
--- a/cave_data/1623-2018-pf-01.html
+++ b/cave_data/1623-2018-pf-01.html
@@ -36,11 +36,6 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
   <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>
 
-<entrance>
-  <entranceslug>1623-2018-pf-01</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 -->
-  <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>
-
 <explorers>CUCC, Paul Fox, Natalie Uomini</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. -->
 <underground_description>See logbook /logbookentry/2018-08-08/t2018-08-08_plateau_to
 2018-PF-01 is a 2m-diameter shaft with an easy climb down to a mossy slope.</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. -->
diff --git a/cave_data/1623-2023-ASH-05.html b/cave_data/1623-2023-ASH-05.html
index 5290924e6..b36a9faa5 100644
--- a/cave_data/1623-2023-ASH-05.html
+++ b/cave_data/1623-2023-ASH-05.html
@@ -40,9 +40,15 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
 
 <entrance>
   <entranceslug>1623-2023-ASH-05a</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 -->
-  <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.  -->
+  <letter>a</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>
 
+<entrance>
+  <entranceslug>1623-2023-ASH-05b</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 -->
+  <letter>b</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>
+
+
 <explorers>Ash, Evelyn, Will K</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>caves-1623/2023-ASH-05/2023-ASH-05.svx</survex_file><!-- Name of top-level survey file for this cave. Relative to the 'loser' survex repository. So for most caves that's "caves/cavenum/cavnum.svx". (e.g. caves/204/204.svx -->
 <underground_description>A large triangular rock arch is visible from a distance (Entrance A). A 10m long passage leads up a loose slope to a small crawl holeback to the surface (Entrance B). Just by Entrance A a small hole can be descended down a 3m climb between boulders before choking</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. -->
diff --git a/cave_data/1626-2023-BL-04.html b/cave_data/1626-2023-BL-04.html
index 9b08c8840..50e32c739 100644
--- a/cave_data/1626-2023-BL-04.html
+++ b/cave_data/1626-2023-BL-04.html
@@ -39,13 +39,13 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
 <unofficial_number>2023-BL-04</unofficial_number><!-- (Either this or kataster_number is required). Initial temporary cave ID used until kataster number is allocated e.g. '2012-DD-01'-->
 
 <entrance>
-  <entranceslug>1626-2023-BL-04</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 -->
-  <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.  -->
+  <entranceslug>1626-2023-BL-04a</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 -->
+  <letter>a</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>
 
 <entrance>
-  <entranceslug>1626-2023-BL-04B</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 -->
-  <letter>B</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.  -->
+  <entranceslug>1626-2023-BL-04b</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 -->
+  <letter>b</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>
 
 <explorers></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. -->
diff --git a/cave_data/pendingcaves.txt b/cave_data/pendingcaves.txt
index f62b00fcc..25a0886fc 100644
--- a/cave_data/pendingcaves.txt
+++ b/cave_data/pendingcaves.txt
@@ -28,3 +28,4 @@
 1623-sw-01
 1623-sw-02
 1623-sw-03
+1623-2017-22