This is a test product for copying and deleting attributes.
All of the images for this product are in the main /images directory and /large directory.
The main products_image is called 1_small.jpg
There are additional images for this product that will auto load located in /images called:
1_small_01.jpg
1_small_02.jpg
1_small_03.jpg
The large additional images are in /images/large called:
1_small_01_LRG.jpg
1_small_02_LRG.jpg
1_small_03_LRG.jpg
The naming conventions for the additional images do not require that they be numeric. Using the numberic system helps establish the sort order of the images and how they will display.
What is important is that all the additional images be located in the same directory and start with the same name: 1_small and end in the same extenion: .jpg
The additional large images need to be located in the /large directory and use the same name plus the Large image suffix, defined in the Admin ... Images ... in this case _LRG