Nicodemus Knob is a 30-feet pillar of Portland stone, left as a landmark and quarrying relic at East Cliff on the Isle of Portland, Dorset, England. A similar artificial pillar formed through quarrying is Pulpit Rock at Portland Bill.[1]
History
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Nicodemus Knob was left as a pillar within the former Admiralty Quarries, which provided stone for the breakwaters of Portland Harbour between 1849-72. It marks the extent to which the convicts excavated stone from the quarries; some six million tonnes of stone was taken from the area, using convict labour from the nearby Portland Convict Establishment.[2]
The stack's intended purpose is uncertain. Some believe that it was left as a seamark, while other suggest it was a memorial to the efforts of those who moved so much stone from the site, or that it was simply to highlight the amount of stone quarried, thereby recording the natural ground level.[3] Near to Nicodemus Knob are a number of small fields, enclosed by drystone walls. Adjacent to the stack are some flat rectangular areas once used by Portland Port Ltd as an industrial storage site.[4] The area is noted as being "botanically rich", while migrant birds are frequently spotted in the area.[5]
References
edit- ^ Bob Ford, Nature Portfolio. "Nicodemus Knob by Bob Ford". Bobfordphotography.com. Retrieved 24 November 2012.
- ^ "Quick facts about the Jurassic Coast". Jurassiccoastline.com. Archived from the original on 3 January 2013. Retrieved 24 November 2012.
- ^ "Nicodemus Knob, Portland, Dorset". Geoffkirby.co.uk. Retrieved 24 November 2012.
- ^ "Isle of Portland Quarries - Geology by Ian West". Southampton.ac.uk. Retrieved 23 October 2017.
- ^ Archer, Mike (September 2010). Bird Observatories of Britain and Ireland - Mike Archer, Mark Grantham, Peter Howlett, Steven Stansfield - Google Books. A&C Black. ISBN 9781408110409. Retrieved 24 November 2012.