diff --git a/inc/ui/collection-edit.php b/inc/ui/collection-edit.php
index 39694d29..54bfe3f3 100644
--- a/inc/ui/collection-edit.php
+++ b/inc/ui/collection-edit.php
@@ -132,6 +132,15 @@ if ( $editor->Available() ) {
   $entryqry = new AwlQuery( 'SELECT count(*) as count from caldav_data where collection_id='.$editor->Value('collection_id')  );
   $entryqry->Exec('admin-collection-edit');
   $entries = $entryqry->Fetch();  $entries = $entries->count;
+  
+  $externalqry = new AwlQuery( 'SELECT external_url from dav_binding where bound_source_id=:id  limit 1', array(':id' => $editor->Value('collection_id') ) );
+  $externalqry->Exec('external-bind-url');
+  $external = $externalqry->Fetch();  $external_url = $external->external_url;
+  if ( $external_url ) {
+    $external_bind = "\n<tr> <th class='right'>" . translate('External Url') . "</th>         <td class='left'>$external_url</td> </tr>";
+  } else {
+    $external_bind = "";
+  }
 }
 else {
   $c->page_title = $editor->Title(translate('Create New Collection'));
@@ -315,7 +324,7 @@ label.privilege {
 </style>
 <table>
  <tr> <th class="right">$prompt_collection_id:</th>    <td class="left">$value_id</td> </tr>
- <tr> <th class="right">$prompt_dav_name:</th>         <td class="left">$value_dav_name</td> </tr>
+ <tr> <th class="right">$prompt_dav_name:</th>         <td class="left">$value_dav_name</td> </tr>$external_bind
  <tr> <th class="right">$prompt_entries:</th>          <td class="left">$entries</td> </tr>
  <tr> <th class="right">$prompt_load_file:</th>        <td class="left">##ics_file.file.60##
   <label class="privilege" title="Should the uploaded entries be appended to the calendar"><input type="checkbox" name="mode" value="append">Append</label>
diff --git a/inc/ui/external-browse.php b/inc/ui/external-browse.php
index 72a847ef..823f2068 100644
--- a/inc/ui/external-browse.php
+++ b/inc/ui/external-browse.php
@@ -4,7 +4,7 @@ param_to_global( 'external_active', '([tf])', 'active' );
 $browser = new Browser(translate('External Calendars'));
 
 $browser->AddColumn( 'collection_id', translate('ID'), 'right', '##collection_link##' );
-$rowurl = $c->base_url . '/admin.php?action=edit&t=external&id=';
+$rowurl = $c->base_url . '/admin.php?action=edit&t=collection&id=';
 $browser->AddHidden( 'collection_link', "'<a href=\"$rowurl' || collection_id || '\">' || collection_id || '</a>'" );
 $browser->AddColumn( 'dav_displayname', translate('Display Name') );
 $browser->AddColumn( 'refs', translate('References'),'right','','(select count(*) from dav_binding where bound_source_id=collection_id )' );
@@ -26,3 +26,13 @@ else {
 
 $page_elements[] = $browser;
 
+
+$externalqry = new AwlQuery( "SELECT count(*) as count from collection where parent_container='/.external/' and collection_id not in ( select bound_source_id from dav_binding where external_url is not null)" );
+$externalqry->Exec('external-bind-url');
+$external = $externalqry->Fetch();  
+if ( $external->count > 0 ) {
+  $link = '<a href="'.$c->base_url . '/admin.php?action=edit&t=external&subaction=clean" class="submit">'. 
+    translate("Remove dangling external calendars").'('.$external->count.')</a>';
+  $c->stylesheets[] = 'css/edit.css';
+  $page_elements[] = $link;
+}
diff --git a/po/messages.pot b/po/messages.pot
index 40252396..28a04b8e 100644
--- a/po/messages.pot
+++ b/po/messages.pot
@@ -508,6 +508,9 @@ msgstr ""
 msgid "Expires"
 msgstr ""
 
+msgid "External Url"
+msgstr ""
+
 msgid "Fail"
 msgstr ""
 
@@ -657,6 +660,9 @@ msgstr ""
 msgid "Last used"
 msgstr ""
 
+msgid "List External Calendars"
+msgstr ""
+
 msgid "List Groups"
 msgstr ""
 
@@ -874,6 +880,9 @@ msgstr ""
 msgid "Read/Write"
 msgstr ""
 
+msgid "References"
+msgstr ""
+
 msgid "Remove"
 msgstr ""