This is an amazing scenery. Placing it in the context of Qin Shin Huang emperor reign (220 BC) and the 700,000 people and 38 years it took to build, you realize how small you are. It took the 3 of us ~1 hour from Xi'an to reach the place. We made a deal with the cab driver for 400 yuan to bring us there, wait for us (~2h) and bring us back home.
A must see.