diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e39fe56
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+/work/
+/venv/
+/tmp/
+/out/
+/data/
+/bin/
diff --git a/build.sh b/build.sh
index 2c4f25d..0f5e8c7 100755
--- a/build.sh
+++ b/build.sh
@@ -5,10 +5,71 @@ if [ "$#" -ne 3 ]; then
     exit 1
 fi
 
-REGION_ROOT="$1"
-REGION="$2"
-MEMORY="$3"
+#Define functions
+generate_region() {
+  local REGION="$1"
+  local REGION_ROOT="$2"
+  local MEMORY="${3:-8g}"
 
+  local POLY_FILE="${REGION}.poly"
+
+  mkdir -p work
+  wget -O "work/$POLY_FILE" \
+    "https://download.geofabrik.de/${REGION_ROOT}/${REGION}.poly"
+
+  mkdir -p "work/contours/$REGION_ROOT/$REGION"
+
+  pyhgtmap \
+    --polygon="work/$POLY_FILE" \
+    --step=75 \
+    --hgtdir=work/hgt \
+    --sources=view1,view3 \
+    --simplifyContoursEpsilon=0.001 \
+    -j16 \
+    --max-nodes-per-tile=0 \
+    --output-prefix="work/contours/$REGION_ROOT/$REGION/con"
+
+  rm -f work/contours.osm
+
+  # max-nodes-per-tile=0 SHOULD generate only one file
+  mv "work/contours/$REGION_ROOT/$REGION"/con* work/contours.osm
+
+  rm -rf "work/contours/$REGION_ROOT/"
+
+  rm -f data/contours.geojson
+
+  osmium export work/contours.osm \
+    -o data/contours.geojson \
+    --overwrite
+
+  rm -f work/contours.osm
+
+  mkdir -p "./out/$REGION_ROOT"
+
+  java -Xmx"$MEMORY" \
+    -jar ./bin/planetiler.jar schema.yml \
+    --download \
+    --area="${REGION}" \
+    --output="./out/${REGION_ROOT}/${REGION}.mbtiles" \
+    --no-simplify \
+    --simplify-tolerance-at-max-zoom=0 \
+    --no-feature-merge \
+    --simplify-tolerance=0
+}
+
+generate_root() {
+    local REGION_ROOT="$1"
+    local REGION="$2"
+    if [[ "$REGION" == "each" ]]; then
+        while IFS= read -r REGION; do
+            generate_region "$REGION" "$REGION_ROOT" "$MEMORY"
+        done < "defs/regions/roots/${REGION_ROOT}.txt"
+    else
+        generate_region "$REGION" "$REGION_ROOT" "$MEMORY"
+    fi
+}
+
+#Prepare environment
 if [ ! -f ./bin/planetiler.jar ]; then
     mkdir -p ./bin
     wget -O ./bin/planetiler.jar https://github.com/onthegomap/planetiler/releases/latest/download/planetiler.jar
@@ -20,26 +81,21 @@ if [ ! -d "$VENV_DIR" ]; then
     . "$VENV_DIR/bin/activate"
     pip install --upgrade pip
     pip install pyhgtmap
+    source "$VENV_DIR/bin/activate"
 else
     source "$VENV_DIR/bin/activate"
 fi
 
-POLY_FILE="${REGION}.poly"
-mkdir -p work
-wget -O "work/$POLY_FILE" "https://download.geofabrik.de/${REGION_ROOT}${REGION}.poly"
+REGION_ROOT="$1"
+REGION="$2"
+MEMORY="$3"
 
-rm -f data/contours.osm
-pyhgtmap --polygon="work/$POLY_FILE" --step=75 --hgtdir=work/hgt --sources=view1,view3 --simplifyContoursEpsilon=0.001 -j16 --max-nodes-per-tile=0 --output-prefix data/contours
-
-osmium export data/contours.osm -o data/contours.geojson --overwrite
-rm -f data/contours.osm
-
-mkdir -p ./out
-java -Xmx"$MEMORY" -jar ./bin/planetiler.jar schema.yml \
-    --download \
-    --area=${REGION} \
-    --output="./out/${REGION}.mbtiles" \
-    --no-simplify \
-    --simplify-tolerance-at-max-zoom=0 \
-    --no-feature-merge \
-    --simplify-tolerance=0
+#Generate
+if [[ "$REGION_ROOT" == "each" ]]; then
+    while IFS= read -r REGION_ROOT; do
+        # Straight up just ignore REGION here
+        generate_root "$REGION_ROOT" "each" "$MEMORY"
+    done < "defs/regions/planet.txt"
+else
+    generate_root "$REGION_ROOT" "$REGION" "$MEMORY"
+fi
diff --git a/defs/.README.md.kate-swp b/defs/.README.md.kate-swp
new file mode 100644
index 0000000..3060c4a
Binary files /dev/null and b/defs/.README.md.kate-swp differ
diff --git a/defs/README.md b/defs/README.md
new file mode 100644
index 0000000..47c3059
--- /dev/null
+++ b/defs/README.md
@@ -0,0 +1 @@
+Local definitions
diff --git a/defs/regions/.europe.txt.kate-swp b/defs/regions/.europe.txt.kate-swp
new file mode 100644
index 0000000..bd506a9
Binary files /dev/null and b/defs/regions/.europe.txt.kate-swp differ
diff --git a/defs/regions/planet.txt b/defs/regions/planet.txt
new file mode 100644
index 0000000..8caa993
--- /dev/null
+++ b/defs/regions/planet.txt
@@ -0,0 +1,8 @@
+africa
+antarctica
+asia
+australia-oceania
+central-america
+europe
+north-america
+south-america
diff --git a/defs/regions/roots/africa.txt b/defs/regions/roots/africa.txt
new file mode 100644
index 0000000..bc37157
--- /dev/null
+++ b/defs/regions/roots/africa.txt
@@ -0,0 +1,55 @@
+algeria
+angola
+benin
+botswana
+burkina-faso
+burundi
+cameroon
+canary-islands
+cape-verde
+central-african-republic
+chad
+comores
+congo-brazzaville
+congo-democratic-republic
+djibouti
+egypt
+equatorial-guinea
+eritrea
+ethiopia
+gabon
+ghana
+guinea
+guinea-bissau
+ivory-coast
+kenya
+lesotho
+liberia
+libya
+madagascar
+malawi
+mali
+mauritania
+mauritius
+morocco
+mozambique
+namibia
+niger
+nigeria
+rwanda
+saint-helena-ascension-and-tristan-da-cunha
+sao-tome-and-principe
+senegal-and-gambia
+seychelles
+sierra-leone
+somalia
+south-africa
+south-sudan
+sudan
+swaziland
+tanzania
+togo
+tunisia
+uganda
+zambia
+zimbabwe
diff --git a/defs/regions/roots/asia.txt b/defs/regions/roots/asia.txt
new file mode 100644
index 0000000..3b9ded8
--- /dev/null
+++ b/defs/regions/roots/asia.txt
@@ -0,0 +1,38 @@
+afghanistan
+armenia
+azerbaijan
+bangladesh
+bhutan
+cambodia
+china
+east-timor
+gcc-states
+india
+indonesia
+iran
+iraq
+israel-and-palestine
+japan
+jordan
+kazakhstan
+kyrgyzstan
+laos
+lebanon
+malaysia-singapore-brunei
+maldives
+mongolia
+myanmar
+nepal
+north-korea
+pakistan
+philippines
+south-korea
+sri-lanka
+syria
+taiwan
+tajikistan
+thailand
+turkmenistan
+uzbekistan
+vietnam
+yemen
diff --git a/defs/regions/roots/australia-oceania.txt b/defs/regions/roots/australia-oceania.txt
new file mode 100644
index 0000000..16d41a0
--- /dev/null
+++ b/defs/regions/roots/australia-oceania.txt
@@ -0,0 +1,23 @@
+american-oceania
+australia
+cook-islands
+fiji
+ile-de-clipperton
+kiribati
+marshall-islands
+micronesia
+nauru
+new-caledonia
+new-zealand
+niue
+palau
+papua-new-guinea
+pitcairn-islands
+polynesie-francaise
+samoa
+solomon-islands
+tokelau
+tonga
+tuvalu
+vanuatu
+wallis-et-futuna
diff --git a/defs/regions/roots/central-america.txt b/defs/regions/roots/central-america.txt
new file mode 100644
index 0000000..5823b80
--- /dev/null
+++ b/defs/regions/roots/central-america.txt
@@ -0,0 +1,11 @@
+bahamas
+belize
+costa-rica
+cuba
+el-salvador
+guatemala
+haiti-and-domrep
+honduras
+jamaica
+nicaragua
+panama
diff --git a/defs/regions/roots/europe.txt b/defs/regions/roots/europe.txt
new file mode 100644
index 0000000..85a9748
--- /dev/null
+++ b/defs/regions/roots/europe.txt
@@ -0,0 +1,53 @@
+albania
+alps
+andorra
+austria
+azores
+belarus
+belgium
+bosnia-herzegovina
+britain-and-ireland
+bulgaria
+croatia
+cyprus
+czech-republic
+dach
+denmark
+estonia
+faroe-islands
+finland
+france
+georgia
+germany
+great-britain
+greece
+guernsey-jersey
+hungary
+iceland
+ireland-and-northern-ireland
+isle-of-man
+italy
+kosovo
+latvia
+liechtenstein
+lithuania
+luxembourg
+macedonia
+malta
+moldova
+monaco
+montenegro
+netherlands
+norway
+poland
+portugal
+romania
+serbia
+slovakia
+slovenia
+spain
+sweden
+switzerland
+turkey
+ukraine
+united-kingdom
diff --git a/defs/regions/roots/north-america.txt b/defs/regions/roots/north-america.txt
new file mode 100644
index 0000000..3f5c46e
--- /dev/null
+++ b/defs/regions/roots/north-america.txt
@@ -0,0 +1,9 @@
+canada
+greenland
+mexico
+us
+us-midwest
+us-northeast
+us-pacific
+us-south
+us-west
diff --git a/defs/regions/roots/south-america.txt b/defs/regions/roots/south-america.txt
new file mode 100644
index 0000000..d315893
--- /dev/null
+++ b/defs/regions/roots/south-america.txt
@@ -0,0 +1,12 @@
+argentina
+bolivia
+brazil
+chile
+colombia
+ecuador
+guyana
+paraguay
+peru
+suriname
+uruguay
+venezuela
diff --git a/schema.yml b/schema.yml
index 174913c..c96abfd 100755
--- a/schema.yml
+++ b/schema.yml
@@ -344,4 +344,3 @@ layers:
           attracion: [slide, water_slide, lazy_river]
           man_made: [pipeline]
           leisure: [track]          
-