diff --git a/core/templatetags/survex_markup.py b/core/templatetags/survex_markup.py
index d6ddd0e..94ba97d 100644
--- a/core/templatetags/survex_markup.py
+++ b/core/templatetags/survex_markup.py
@@ -7,6 +7,13 @@ import re
 register = template.Library()
 
 # seems to add extra lines between the commented lines, which isn't so great.
+
+# Simple use in svxfile.html produces a textarea, double-spacing and no colouring.
+# so this is going to take some work, and we are better off not using it but getting
+# syntax colouring to work with CodeMirror instead. PPhilip S. 28 March 2021.
+
+# The only template which used it, survexblock.html, has been removed as unnecessary.
+
 regexes = []
 regexes.append((re.compile(r"(;.*)$", re.IGNORECASE|re.MULTILINE),
                r'<span class = "comment">\1</span>\n'))
diff --git a/core/views_caves.py b/core/views_caves.py
index 5820857..95de183 100644
--- a/core/views_caves.py
+++ b/core/views_caves.py
@@ -277,14 +277,6 @@ def entranceSlug(request, slug):
     else:
         return render(request,'entranceslug.html', {'entrance': entrance})
 
-def survexblock(request, survexpath):
-    survexpath = re.sub("/", ".", survexpath)
-    print("jjjjjj", survexpath)
-    survexblock = models.SurvexBlock.objects.get(survexpath=survexpath)
-    #ftext = survexblock.filecontents()
-    ftext = survexblock.text
-    return render(request,'survexblock.html', {'survexblock':survexblock, 'ftext':ftext, })
-
 def surveyindex(request):
     surveys=Survey.objects.all()
     expeditions=Expedition.objects.order_by("-year")
diff --git a/templates/survexblock.html b/templates/survexblock.html
deleted file mode 100644
index b159956..0000000
--- a/templates/survexblock.html
+++ /dev/null
@@ -1,49 +0,0 @@
-{% extends "base.html" %}
-{% load wiki_markup %}
-{% load survex_markup %}
-
-
-{% block title %}Survex Block{% endblock %}
-
-{% block content %}
-<h2>Survex Block {{survexblock.survexpath}}</h2>
-
-<p>Link to <a href="{% url "svx" survexblock.survexfile.path %}">{{survexblock.survexfile.path}}</a></p>
-
-<p>Needs duplicates removed from right hand column</p>
-<p>Needs links to survex file presentation</p>
-<p>Needs to start dealing with misspellings of names (prob by editing the originals)</p>
-
-<div id="col2">
-
-{% if survexblock.parent %}
-    <p>Survey block above:</p>
-    <p class="indent"><a href="{% url "survexblock" survexblock.parent.survexpath %}">{{survexblock.parent.survexpath}}</a></p>
-{% endif %}
-
-{% if survexblock.survexblock_set.all %}
-  <p>Survey blocks below:</p>
-  {% for survexblockdown in survexblock.survexblock_set.all %}
-    <p class="indent"><a href="{% url "survexblock" survexblockdown.survexpath %}">{{survexblockdown.survexpath}}</a></p>
-  {% endfor %}
-{% endif %}
-
-<p>Date: {{survexblock.date}}</p>
-
-<table>
-{% for personrole in survexblock.GetPersonroles %}
-<tr>
-  <td><a href="{{personrole.person.get_absolute_url}}">{{personrole.person}}</a></td>
-  <td>{{personrole.roles}}</td>
-</tr>
-{% endfor %}
-</table>
-
-
-</div>
-
-<div class="survexblock">
-  {{ftext|survex_to_html}}
-</div>
-
-{% endblock %}
diff --git a/urls.py b/urls.py
index 429c0c6..4968ad8 100644
--- a/urls.py
+++ b/urls.py
@@ -109,7 +109,6 @@ actualurlpatterns = [
 
 #   url(r'^map/', .........), # Intercepted by Apache. Yields OpenStreetMap. Redirects to expoweb/map
 
-    url(r'^survexblock/(.+)$',                     views_caves.survexblock, name="survexblock"),
     url(r'^survexfile/(?P<survex_file>.*?)\.svx$', views_survex.svx,        name="svx"),
     url(r'^survexfile/(?P<survex_file>.*?)\.3d$',  views_survex.threed,     name="threed"),
     url(r'^survexfile/(?P<survex_file>.*?)\.log$', views_survex.svxraw),