Similar to 白鶴梁

Three Gorges

Great Hall of the People (Chongqing)

Three Natural Bridges

Shuanggui Temple

Hydrography

Nautical chart

CTD (instrument)

United Kingdom Hydrographic Office

Office of Coast Survey

OpenSeaMap

Echo sounding

Electronic navigational chart

International Hydrographic Organization

State Oceanic Administration

Automatic radar plotting aid

Bathymetry

Sounding lead

General Bathymetric Chart of the Oceans