diff --git a/docs/whats-new.rst b/docs/whats-new.rst
index e16f038d9..bdd24639e 100644
--- a/docs/whats-new.rst
+++ b/docs/whats-new.rst
@@ -66,6 +66,9 @@ Enhancements
   instead of glacier-per-glacier values. This is useful to trick
   RGI7 into being calibrated or other things (:pull:`1692`).
   By `Fabien Maussion <https://github.com/fmaussion>`_
+- Added the rgi7g_to_complex task which adds a mask of glacier
+  entities in the glacier complex glacier dirs (:pull:`1736`).
+  By `Fabien Maussion <https://github.com/fmaussion>`_
 
 Bug fixes
 ~~~~~~~~~
diff --git a/oggm/cli/prepro_levels.py b/oggm/cli/prepro_levels.py
index 01b77993f..d53e69b69 100644
--- a/oggm/cli/prepro_levels.py
+++ b/oggm/cli/prepro_levels.py
@@ -484,6 +484,9 @@ def _time_log():
         if add_glathida:
             from oggm.shop.glathida import glathida_to_gdir
             workflow.execute_entity_task(glathida_to_gdir, gdirs)
+        if rgi_version == '70C':
+            # Some additional data for the 70C glaciers
+            workflow.execute_entity_task(tasks.rgi7g_to_complex, gdirs)
 
         if bin_variables and gdirs_band:
             workflow.execute_entity_task(tasks.elevation_band_flowline,