This is a more detailed moon for San Andreas. I loved a similar mod that I used in Vice City, but I couldn't find one so I made a version myself. You need to use the TXD editor to install this, and a backup is included.
One problem with the new version of this mod... The "man in the moon" is at the 3 o'clock position, when it should be at the 12 o'clock position. You need to edit it so that the image is rotated 90 degrees counter-clockwise, so the moon features will appear to be in the correct positions as if you were looking at it in real life.