A promontory is a prominent mass of land which overlooks lower lying land or a body of water. Promontory may also refer to: Geology and geography Promontory Summit, where the United States first transcontinental railroad was completed in Box Elder County, Utah Promontory, Utah, an unincorporated community on Promontory Summit Promontory Mountains, a mountain range in Box Elder County, Utah, United States Anatomy Sacral promontory, in anatomy, the anteriormost portion of the sacrum Promontory of tympanic cavity, a part of the ear Other "Promontory", a 1992 song from The Last of the Mohicans soundtrack Promontory Financial Group, a wholly owned subsidiary of IBM See also Promontory Point (disambiguation)