# Williamson Bluff

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**Williamson Bluff** is a flat-topped bluff more than 1,000 metres (3,300 ft) high near the head of [Trail Inlet](/source/Trail_Inlet) on the east coast of [Graham Land](/source/Graham_Land). The upper part of the bluff is snow topped, but the sides are steep and rocky. The bluff extends from the east side of [Bills Gulch](/source/Bills_Gulch), 4 nautical miles (7.4 km; 4.6 mi) northeast of [Mount Shelby](/source/Mount_Shelby). First photographed from aircraft by personnel of [United States Antarctic Service](/source/United_States_Antarctic_Service) (USAS) on a flight of September 28, 1940. Named by [United Kingdom Antarctic Place-Names Committee](/source/United_Kingdom_Antarctic_Place-Names_Committee) (UK-APC) after the Rev. [William Williamson](/source/William_Williamson_(mathematician)) (1804–75), British mathematician and lawyer who made one of the earliest measurements of the surface flow of a [glacier](/source/Glacier), in Switzerland, 1844.

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