I have a researcher looking for a basemap like OpenStreetMap, but showing the Pacific at the center. They want to overlay the Ring of Fire, and then show the Out-of-Africa migration.

The migration part can probably be done in any image editing software, once the overlays are done. Can this be done in something like QGIS?

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It's perfectly possibly and easy to do: set the project CRS to EPSG:3832: a Pacific centered equivalent of the regular WebMap CRS EPSG:3857.

To change the project CRS, click on the bottom right corner, filter for 3832 and select WGS 84 / PDC Mercator - EPSG:3832: enter image description here

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