Lore: Geography

Lore: Arcana represents your knowledge of lands, terrain, climate, people.

Modifying ability: Intelligence

Classes: Arcane Scholar, Arcane Trickster, Archmage, Bard, Cavestalker, Dissonant Chord, Dragon Warrior, Dread Pirate, Frost Mage, Harper Agent, Pale Master, Ranger, Shadow Adept, Silverstar, Spirit Shaman, Stormsinger, Wilderness Stalker, Wizard.

Requires training: No

Check: Answering a question within your field of study has a DC of 10 (for really easy questions), 15 (for basic questions), or 20 to 30 (for really tough questions).

Use: Usually none. In most cases, making a Knowledge check doesn't take an action. You simply know the answer or your don't.