Mouth of the Danube

These are the maps appearing on the video regarding Garalzapan's Land:

The elevation map:

The political map:

Ottoman Empire (pale yellow); Poland (lime green);
Transylvania (brown); Kiyev (pink); Hungary (aqua);
Zaporozhian Cossacks (orange); Cumana (dark green)

Finally, the infrastructure map:

This map is also contorted 60-degrees, just as the Anatolian map before ... but it is less evident, because it is all land.  Once again, the 30th meridian can be see as an orange line at the bottom middle and the top right.  The Danube is the river on the left; the large river on the top right is the Dneiper.