What is the name of the canyon carved by the Verdon River in France?

Which canyon in Arizona, USA is known for its red rock? In which mountain range is the Samaria Gorge, a famous canyon in Greece? What is the name of the deepest canyon in the United States? What is the name of the canyon carved by the Rhine River in Switzerland? In which country is the Copper Canyon located? In which state is the Waimea Canyon located? What is the name of the canyon that runs along the Snake River in Idaho? What is the name of the canyon that runs through the Guadalupe Mountains National Park in Texas?