Geffron's Peak is your first major dungeon outside of Elysia. The path is winding, with several branching paths that lead to treasure chests. Be wary of new Hellion types, including airborne enemies that require ranged Artes to effectively engage. Mikleo's Hidden Artes will be particularly useful here. You'll also encounter your first 'Discovery' points, which provide lore and experience. activate any save points you come across. The peak culminates in a small settlement where you can rest and purchase basic supplies before descending towards Ladylake. The environment introduces environmental hazards, so pay attention to your surroundings.
