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Grey Sea

First appeared in Hollow World (1990).

Adjusted Replica Map of the Hollow World Set Hollow World Planetary Map with art errors fixed, November 2025

Hollow World Set Hollow World Planetary Map v2

Hollow World Set Hollow World Planetary Map

Hollow World, 40 miles per hex

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Pages

About
Supporting the Atlas
Indices
Inner-Outer World Correlation
Appendix A: Archives
Appendix C: Cartographic Chronology
Appendix F: Fonts of Mystara’s Maps
Appendix G: Gazetteer
Appendix J: Japanese Mystara
- Japanese D&D Rules Cyclopedia
- Japanese B10-B12
Appendix L: Lining Up Mystara
Appendix M: Mappers of Mystara

Thorfinn Tait Cartography

Copyright Notice

All content is copyright Thorfinn Tait, 1999-2025. All rights reserved. Atlas of Mystara by Thorfinn Tait is licensed under a Creative Commons Attribution – Non-Commercial – Share-Alike 4.0 International License. Feel free to use, repost, and modify, as long as you give credit. Hex art is copyright Thorfinn Tait, 1999-2025. The art used for my Mystara maps is also available to use under a Creative Commons license. Maps tagged as Fan-made maps are copyright their creators, and reposted here with permission.

Mystara is owned by Wizards of the Coast. All of my Mystara work is strictly non-commercial, on a voluntary basis as a member of the Mystara fan community. Atlas of Mystara is unofficial Fan Content permitted under the Wizards Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.

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