Summary

The extent of the Niagara Escarpment in New York, Ontario, Michigan, and Wisconsin (marked in red).

This map's source is here archive copy at the Wayback Machine, with the uploader's modifications, and the GMT homepage archive copy at the Wayback Machine says that the tools are released under the GNU General Public License.

source

originally uploaded to the English Wikipedia, as en:Image:Niagara Escarpment in Red.png. history there:

(del) (cur) 17:20, 22 December 2005 . . Kelisi (Talk | contribs) . . 931×535 (29,293 bytes) (The extent of the Niagara Escarpment in New York, Ontario, Michigan, and Wisconsin (marked in red). This map's source is [http://www.aquarius.geomar.de/omc/make_map.html here], with the uploader's modifications, and the [http://gmt.soest.hawaii.edu/ GMT ) NOTE: The links to the map's source and the uploader's modifications are both dead as of December 1, 2019. Sciencebookworm (talk) 05:43, 1 December 2019 (UTC)

Licensing

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	This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Subject to disclaimers.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue