On Mountaintop Golf and Lake Club, Daniel helped me, and when I made the panorama for Black Rock I was determined to learn how to remove the white line myself, and after some reading online I managed it. Now three months later I seem to have forgotten.

This is how I thought I removed the line:
- manually remove the sky up to the terrain using Select, Fill with white, Colour to Alpha,
- use fuzzy select and select Grow by 1 or 2 pixels,
- then Fill, Colour to Alpha
(The shapes on the left are using antialiasing, and on the right not)
In GIMP In Links Is there anyone who can tell me what I am doing wrong so that I can conquer once and for all my white line problem?
Thank you,

Ian