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  • I only go in a small fraction of an inch, maybe an eighth of an inch, but I can see the footprints of my boots and the treads in the fine sandy particles.

    NEIL ARMSTRONG
  1. black
  2. grey
  3. blue
  4. red
  5. brown
  6. white

I only go in a small fraction of an inch, maybe an eighth of an inch, but I can see the footprints of my boots and the treads in the fine sandy particles.