Canyons

I love shooting Canyons as there are always so many compositions. But the light is always, always difficult and I normally end up layering using luminosity masking to get the requited dynamic range for the edit I want (yes I know I should just buy a Sony but I like my canon L series telephotos too much).

Here are five canyons below ? Full marks for guessing where each one is. Bonus marks for dropping your favourite canyon in the comments below.