Chongqing is a hilly city with winding streets.

In view of the characteristics that Fujian Province is located in hilly lands and the high speed railway has many tunnels, the regulation requires that the railway construction unit or the railway transportation enterprise should be consulted before building the hilly ponds, reservoirs, and dams and digging the river channels, main canals and wells within the scope of 200 meters from the center line above the high speed railway tunnels on both sides, which might affect the safety of tunnels.

The Kagoshima Space Centre (KSC) is located in a mostly hilly area of Uchinoura cho, on the east coast of Ohsumi Peninsula, Kagoshima Prefecture. Covering a total of 71 hectares, the area of KSC includes various facilities for launching rockets, telemetry and tracking, command stations for rockets and satellites and optical observation posts, at sites developed by flattening the tops of several hills.