The Cartographer perk reveals entire region when all locations have been found.
Revealing an entire region is useful for many reason such as finding locations for special missions, or simply navigation.
On it's own, the perk is semi-useful. However, combined with weather balloons Cartographer can reveal the region upon entering it. It takes one balloon for each location within the region, which usually means three balloons for the region to be fully explored, adding bonus to compass accuracy and removing the need to wander around.
Another way to remotely reveal locations is through use of Coston flares but unlike balloons they have limited range, require marker on a map and can cause fire.
Cartographer should work well with Geography.
|Explorers||General||Anthropology • Black Market • Bullet Hoarder • Careerist • Cartographer • Charismatic • Climber • Desert Explorer • Dream Visions • Eagle Eye • Explosion Expert • Fresh Air Fanatic • Geography • Good Reputation • Impetus • Jungle Explorer • Lone Survivor • Navigator • Occult Vision • Polyglot • Polymath • Strong Mind • Waterproof|
|Unique||Animal Whisperer • Authoritive Leader • Butterfly Enthusiast • Cosmic Indifferent • Pacifist|
|Companions||Animal Capacity • Artist • Coca Expert • Combat Spirit • Culinary Finesse • Desert Expert • Extra Capacity • Flare Usage • Geography • Haggle • Indigenous Diplomacy • Journalist • Mushroom Recipes • Scouting • Slow Mount • Stealth • Strong Mind • Whisky Expert|
|Blessings||Holy Marking • Inhuman Strength • Leatherskin • Pure Mind • Regeneration|