I invaded Mister Abbot's map to make a small microzone.

More than anything, I wanted to draw a region around a lake. For this map, I used as a reference part of the contour of Lake Nahuel Huapi, where the famous city of Bariloche - Argentina is located and which also serves as the border between the two provinces of Neuquen and Río Negro.

@jmabbott Cheers

If you want to make it even darker, you can create a Sheet on top of the Sheet of Sea Contours 2, 3, 4 etc and control the edge fade inner. This way they won't be superimposed badly.

Cheers