micro air vehicle or similar to perform internal inspection 300ft high 2

[carterav]

I am looking for ideas related to performing a video/camera type inspection of a ~300ft tall stack with ~8.5ft diameter at it's top with remote controlled equipment. I've seen the T-Hawk from Honeywell and I am looking into it, but I wanted to ask for help on this site about what other options might be available (besides physically climbing up the chimney/stack and dropping a camera down inside).

 

[moon161]

Camera cart, light rig and a few flip HD's or similar. Direct illum on the way down, sidelight on the way up.

 

[btrueblood]

Bungee cord and high-speed video camera, falling behind a magnesium flare.