Here is Veracruz, Mexico
I regularly ride from sea level to around 10,000ft and often times up towards 14,000ft.
Roads are tight mountain curves, guardrails are often "not", or just some barbed wire.
Sometimes you need slowing down in a hurry.
The "keep going" part would be fun until the landing. LOL!
With the tope "speed bumps" we have here in Mexico, the only way you could get high mileage out of discs and pads is to ride at about 25kmh.
Here is a video of a typical ride, that's me out front and Trevor, a visiting Aussie shot the footage with a Contour camera on his helmet. It will give you a good idea of what ranks about a 5 out of 10 here. It gets interesting after the 1:00 minute mark and you can see the drops at around 7:30 mark. Enjoy! I know I do!
http://www.youtube.com/watch?v=NUkspSuTEH8