diff --git a/handbook/survey/coord2.html b/handbook/survey/coord2.html
index 9dcc52cbc..934aca5d1 100644
--- a/handbook/survey/coord2.html
+++ b/handbook/survey/coord2.html
@@ -15,7 +15,8 @@
 
 <a href="lasers.htm">Geographical fixed points on Loser</a><br>
   <a href="/katast.htm">The Austrian Kataster areas</a><br />
-<a href="https://hoehle.org/downloads/SD_10_Handbuch.pdf">SD 10 Handbook: Vergleich der &Ouml;K 50 mit der neuen  &Ouml;K 50-UTM</a>.
+<a href="https://hoehle.org/downloads/SD_10_Handbuch.pdf">SD 10 Handbook: Vergleich der &Ouml;K 50 mit der neuen  &Ouml;K 50-UTM</a><br>
+  <a href="https://www.cavinguk.co.uk/info/locatingsurveys.html">Location fixing: How to obtain a fixed point for a cave survey</a>
   
 <h3 id="summary">Summary - for 2023</h3>
 <p>Surveying in Austria does <em>not</em> just use the latitude and longitude you may be familiar with from Google maps, your phone etc.