This Google Street Views camera shot of Red Rocks Amphitheatre (Links to an external site.) in Colorado, the venue has been cut directly into a classic that was made by the . Which answer best fills in these blanks.

a. fault; broken metamorphic
b. rock anticline; folded igneous
c. rock hogback; titled sedimentary
d. rock syncline; folded sedimentary rock

C. rock hogback; titled sedimentary.

Explanation:

The Amphitheatre is an open-air place where all forms of entertainment takes place. The redrock Amphitheatre is built on a structure of rock close to Morrison Colorado. It consists of a large, tilted, disc-shaped rock at the back of the stage, a huge vertical rock angled from the stage rightward and several large outcrops angled outwards from stage left and a seating area for up to approximately 9000 people in between. The amphitheatre is about 1,970 m above sea level, and the surrounding Red Rocks Park covers 868 acres of land. The amphitheatre is owned by the City and County of Denver, Colorado and is situated in Red Rocks Park, part of the Denver Mountain Parks.

Redrock Amphitheatre is cut into a hogback that is made up of sandstone. The ridge protrudes because it has more resistance to erosion, leaching and rock decay than the weaker shale sedimentary layers.

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