This is a difficult shot to get the exposure right.
In order to get the exposure so that the mountains could be seen yet not have the moon details completely blown out, I took two separate captures. The first was with a long shutter speed to capture the mountain. I then took another shot with a fast shutter to catch the detail of the moon. Then in Photoshop I laid the image with the mountain detail over the one with the moon detail and masked it to allow the moon detail to show through.
See the color version here: