The Corridor Ages

The Humans come into their own, fast and hungry. The Confluence Marches are carved out of the basins, the Headwater roads bind Humans and Dwarves in trade and quarrel, and the Serathic river towns band into a league. The same hunger swallows the Reedfolk rivers, chains Ogre camps to the road-work by debt until they rise against it, drags Dwarven workframes out into the world, and pushes into the Elderweald and against the Elven realms. Near its end the last Beyonder Incursion swallows a Headwater valley in Qzoth's Bloom, and it is burned back with fire.

• The Founding of the Confluence Marches (c. 40,000-c. 20,000 BR)
• The Lower River Absorptions (c. 30,000-c. 8,000 BR)
• The Headwater Alignments (c. 28,000-c. 14,000 BR)
• The Elderweald Border Pressures (c. 26,000-c. 10,000 BR)
• The Confluence Rise (c. 24,000-c. 2,000 BR)
• The Founding of the Serathic League (c. 22,000-c. 16,000 BR)
• The Human Corridor Orders (c. 18,000-c. 7,000 BR)
• The Chain-Camps (c. 18,000-c. 8,000 BR)
• The Headwater Exchange Roads (c. 16,000-c. 8,000 BR)
• The Crownbough Embassies (c. 16,000-c. 8,000 BR)
• The Spread of the Predecessor-Frames (c. 16,000-c. 2,000 BR)
• The Qzoth Incursion (c. 4,000-c. 3,500 BR), the last