diff --git a/workshop/content/docs/publishing/ogcapi-coverages.md b/workshop/content/docs/publishing/ogcapi-coverages.md
index 21bb11f..a2250fc 100644
--- a/workshop/content/docs/publishing/ogcapi-coverages.md
+++ b/workshop/content/docs/publishing/ogcapi-coverages.md
@@ -21,51 +21,37 @@ as well as [CoverageJSON](https://covjson.org) and native output.
 
 ## Publish a raster dataset
 
-In the previous exercises we have demonstrated the steps involved to publish vector data and update the pygeoapi configuration. In this section we are going to
-publish a raster file in GeoTIFF format, from a [rasterio](https://rasterio.readthedocs.io) source provider.
+In the previous exercises we have demonstrated the steps involved to publish vector data and update the pygeoapi configuration. In this section we are going to publish a raster file in GeoTIFF format, from a [rasterio](https://rasterio.readthedocs.io) source provider.
 
-Download and unzip the GeoTIFF file:
-
-<div class="termy">
-```bash
-cd workshop/exercises/data
-curl -O http://dati.cittametropolitana.fi.it/geonetwork/srv/api/records/cmfi:419774cb-e812-4ca4-991d-97f0b747e017/attachments/53.zip
-unzip 53.zip
-```
-</div>
-
-If you do not have curl installed, copy the URL above to your web browser and save locally.
-
-You can now add `53_ED1_G.tif` to pygeoapi:
 
 !!! question "Update the pygeoapi configuration"
 
     Open the pygeoapi configuration file in a text editor. Add a new dataset section as follows:
 
     ``` {.yaml linenums="1"}
-    firenze-terrains:
+    tartu-ntl:
         type: collection
-        title: Administrative boundaries before 2014
-        description: Cadastral parcels (terrains) from the cadastre. Territory Agency; SIT and Information Networks;
+        title: Night Time Light Data 
+        description: Night Time Light Data averaged for 2023 in Tartu region.
         keywords:
-            - Cadastral parcels
+            - Night Time Light
         links:
-            - type: text/html
-              rel: canonical
-              title: Administrative boundaries before 2014
-              href: http://dati.cittametropolitana.fi.it/geonetwork/srv/metadata/cmfi:419774cb-e812-4ca4-991d-97f0b747e017
-              hreflang: it
+            -   type: text/html
+                rel: canonical
+                title: Nasa's Black Marble
+                href: https://blackmarble.gsfc.nasa.gov/
+                hreflang: it
         extents:
             spatial:
-                bbox: [10.70,43.43,11.76,44.25]
+                bbox: [26.6264,58.32569,26.82632,58.433989]
                 crs: http://www.opengis.net/def/crs/OGC/1.3/CRS84
         providers:
-            - type: coverage
-              name: rasterio
-              data: /data/53_ED1_G.tif # place correct path here
-              format:
-                  name: GTiff
-                  mimetype: application/tiff
+            -   type: coverage
+                name: rasterio
+                data: /data/tartu/estonia_light.tif # place correct path here
+                format:
+                    name: GTiff
+                    mimetype: application/tiff
     ```
 
 !!! tip
diff --git a/workshop/exercises/data/tartu/estonia_light.tif b/workshop/exercises/data/tartu/estonia_light.tif
new file mode 100644
index 0000000..dbd78cf
Binary files /dev/null and b/workshop/exercises/data/tartu/estonia_light.tif differ
diff --git a/workshop/exercises/pygeoapi.config.yml b/workshop/exercises/pygeoapi.config.yml
index e141798..4b54d48 100644
--- a/workshop/exercises/pygeoapi.config.yml
+++ b/workshop/exercises/pygeoapi.config.yml
@@ -254,29 +254,29 @@ resources:
 ## END - EXERCISE 2 - cadastral parcels Tartu
 
 ## START - EXERCISE 3 - Coverages
-#     firenze-terrains:
-#         type: collection
-#         title: Administrative boundaries before 2014
-#         description: Cadastral parcels (terrains) from the cadastre. Territory Agency; SIT and Information Networks;
-#         keywords:
-#             - Cadastral parcels
-#         links:
-#             -   type: text/html
-#                 rel: canonical
-#                 title: Administrative boundaries before 2014
-#                 href: http://dati.cittametropolitana.fi.it/geonetwork/srv/metadata/cmfi:419774cb-e812-4ca4-991d-97f0b747e017
-#                 hreflang: it
-#         extents:
-#             spatial:
-#                 bbox: [10.70,43.43,11.76,44.25]
-#                 crs: http://www.opengis.net/def/crs/OGC/1.3/CRS84
-#         providers:
-#             -   type: coverage
-#                 name: rasterio
-#                 data: /data/53_ED1_G.tif # place correct path here
-#                 format:
-#                     name: GTiff
-#                     mimetype: application/tiff
+    # tartu-ntl:
+    #     type: collection
+    #     title: Night Time Light Data 
+    #     description: Night Time Light Data averaged for 2023 in Tartu region.
+    #     keywords:
+    #         - Night Time Light
+    #     links:
+    #         -   type: text/html
+    #             rel: canonical
+    #             title: Nasa's Black Marble
+    #             href: https://blackmarble.gsfc.nasa.gov/
+    #             hreflang: it
+    #     extents:
+    #         spatial:
+    #             bbox: [26.6264,58.32569,26.82632,58.433989]
+    #             crs: http://www.opengis.net/def/crs/OGC/1.3/CRS84
+    #     providers:
+    #         -   type: coverage
+    #             name: rasterio
+    #             data: /data/tartu/estonia_light.tif # place correct path here
+    #             format:
+    #                 name: GTiff
+    #                 mimetype: application/tiff
 ## END - EXERCISE 3 - Coverages
 ## START - EXERCISE 4 - Tiles
 #     bathingwater-estonia: