I have an area of woods at the end of my yard the wife likes to garden in but it can get pretty muddy at times so I am putting in a decorative gravel path for her. I dug it out to about 10" depth and put down 9 tons of crushed stone. On top of that I'm using interlocking edging brick and 9 ton of trap rock. Good project to work the muscles after loafing all winter.