diff --git a/public/site/models/geoformat.php b/public/site/models/geoformat.php
new file mode 100644
index 0000000..6f49082
--- /dev/null
+++ b/public/site/models/geoformat.php
@@ -0,0 +1,13 @@
+<?php
+
+use Kirby\Cms\Page;
+
+class GeoformatPage extends Page
+{
+    public function coverFiles()
+    {
+        return $this->files()->add(
+            $this->children()->filterBy('intendedTemplate', 'map')->files()
+        );
+    }
+}