Black Hole Diagrams

Developing ideas for cyanotypes/schematics around the whole black hole subject area. 

Also, I have learned that objects apparently move faster than the speed of light within the inner horizon of a black hole. I'm thinking that if you could harness this extreme gravitational force time travel might be fairly feasible! If you were travelling faster than light...it just blows my mind. You would be seeing 'old' photons of light in front of you? Would you become invisible? If you are approaching someone at faster than lightspeed, surely you cannot be seen....