Headland!

A headland is a coastal landform, a point of land usually high and often with a sheer drop, that extends into a body of water.  I started inking the map, working on the coastline, rivers and lakes. I was admiring my handiwork when I suddenly saw this shape. Now that's what you call a headland! When the hills and mountains and lettering are inked in, it will probably be a bit less obvious.