diff --git a/.vscode/settings.json b/.vscode/settings.json
index b795faa..dec257f 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -14,6 +14,7 @@
     "hinanbasho",
     "Maxar",
     "naturalearthdata",
+    "opencellid",
     "openstreetmap",
     "seamlessphoto",
     "shapefile",
diff --git a/Makefile b/Makefile
index 1204dfb..0bfefb8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,11 @@
 
-subdirs = \
-	lib/ucdp.uu.se/ged231-csv.zip \
-	lib/download.geofabrik.de/asia/japan/kanto
+SUBDIRS = \
+	./lib/tasks/opencellid_full/pmtiles/Makefile \
+	./lib/tasks/ucdp_ged_23_1/pmtiles/Makefile
 
-all: $(subdirs)
+all: $(SUBDIRS)
 
-clean: $(subdirs)
+$(SUBDIRS): FORCE
+	$(MAKE) -f $@ $(MAKECMDGOALS)
 
-$(subdirs):
-	$(MAKE) -C $@ $(MAKECMDGOALS)
+FORCE:
diff --git a/lib/data/ucdp.uu.se/ged231-csv.zip/index.yaml b/lib/data/ucdp.uu.se/ged231-csv.zip/index.yaml
index cbfddfd..709ed29 100644
--- a/lib/data/ucdp.uu.se/ged231-csv.zip/index.yaml
+++ b/lib/data/ucdp.uu.se/ged231-csv.zip/index.yaml
@@ -1,4 +1,4 @@
-data_id: ucdp-ged-23_1
+data_id: ucdp_ged_23_1
 license: CC-BY-4.0
 attributions:
   - Uppsala Conflict Data Program
diff --git a/lib/tasks/opencellid_full/pmtiles/Makefile b/lib/tasks/opencellid_full/pmtiles/Makefile
new file mode 100644
index 0000000..39b23d5
--- /dev/null
+++ b/lib/tasks/opencellid_full/pmtiles/Makefile
@@ -0,0 +1,29 @@
+
+.PHONY: all
+all: tmp/opencellid.org/cell_towers.pmtiles
+
+tmp/opencellid.org/cell_towers.csv.gz:
+	mkdir -p tmp/opencellid.org
+	wget https://opencellid.org/downloads/cell_towers.csv.gz -O tmp/opencellid.org/cell_towers.csv.gz
+
+tmp/opencellid.org/cell_towers.csv: tmp/opencellid.org/cell_towers.csv.gz
+	gunzip -c tmp/opencellid.org/cell_towers.csv.gz > tmp/opencellid.org/cell_towers.csv
+
+tmp/opencellid.org/cell_towers.geojson: tmp/opencellid.org/cell_towers.csv
+	ogr2ogr \
+		-overwrite \
+		-f GeoJSON \
+		-oo X_POSSIBLE_NAMES=lon \
+		-oo Y_POSSIBLE_NAMES=lat \
+		tmp/opencellid.org/cell_towers.geojson \
+		tmp/opencellid.org/cell_towers.csv
+
+tmp/opencellid.org/cell_towers.pmtiles: tmp/opencellid.org/cell_towers.geojson
+	tippecanoe \
+		-Z1 \
+		-z18 \
+		-pf \
+		-pk \
+		-P \
+		-o tmp/opencellid.org/cell_towers.pmtiless \
+		tmp/opencellid.org/cell_towers.geojson
diff --git a/lib/tasks/ucdp_ged_23_1/pmtiles/Makefile b/lib/tasks/ucdp_ged_23_1/pmtiles/Makefile
new file mode 100644
index 0000000..ba3c82a
--- /dev/null
+++ b/lib/tasks/ucdp_ged_23_1/pmtiles/Makefile
@@ -0,0 +1,31 @@
+
+.PHONY: all
+all: tmp/ucdp.uu.se/GEDEvent_v23_1.pmtiles
+
+tmp/ucdp.uu.se/ged231-csv.zip:
+	mkdir -p tmp/ucdp.uu.se
+	wget https://ucdp.uu.se/downloads/ged/ged231-csv.zip -O tmp/ucdp.uu.se/ged231-csv.zip
+
+tmp/ucdp.uu.se/GEDEvent_v23_1.csv: tmp/ucdp.uu.se/ged231-csv.zip
+	unzip -f tmp/ucdp.uu.se/ged231-csv.zip -d tmp/ucdp.uu.se
+
+tmp/ucdp.uu.se/GEDEvent_v23_1.geojson: tmp/ucdp.uu.se/GEDEvent_v23_1.csv
+	ogr2ogr \
+		-overwrite \
+		-f GeoJSON \
+		-oo X_POSSIBLE_NAMES=longitude \
+		-oo Y_POSSIBLE_NAMES=latitude \
+		-a_srs EPSG:4326 \
+		--debug ON \
+		tmp/ucdp.uu.se/GEDEvent_v23_1.geojson \
+		tmp/ucdp.uu.se/GEDEvent_v23_1.csv
+
+tmp/ucdp.uu.se/GEDEvent_v23_1.pmtiles: tmp/ucdp.uu.se/GEDEvent_v23_1.geojson
+	tippecanoe \
+		-Z1 \
+		-z18 \
+		-pf \
+		-pk \
+		-P \
+		-o tmp/ucdp.uu.se/GEDEvent_v23_1.pmtiles \
+		tmp/ucdp.uu.se/GEDEvent_v23_1.geojson