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ecological-boundaries
The Wormline marks the northernmost extent of sandworm activity, showing how ecology restricts human and biological presence.
1 chapter across 1 book
Dune (1965)Frank Herbert
Chapter 60
This chapter provides detailed cartographic notes describing the geography and key landmarks of the desert planet Arrakis. It outlines important physical features such as the Great Bled, various passes, chasms, and sietch locations, emphasizing the harsh and varied terrain that shapes the environment and culture. The notes also highlight the significance of moisture and sandworms in determining the limits of life and human settlement.