Relation History: 2803915

Improve source for defensive works, add more specific start dates and end dates

end_date	1888
end_date:edtf	1888~
end_date:note	Source mentions the moat in front of Holcks bastion being filled in 1888 but it's unclear how much area this included
end_date:source	Skaarup, Dahl. Guide til Københavns Befæstning. 1996. https://www.kobenhavnshistorie.dk/index.php/e-boger/16-bog/gtkb/179-gtkb?showall=1
natural	water
source	Trap, J.P. Statistisk-topographisk beskrivelse af kongeriget Danmark. 1872 https://archive.org/details/statistisktopogr01trap
start_date	1870
start_date:edtf	1870~
start_date:source	https://web.archive.org/web/20130921212343/http://www.kobenhavnshistorie.dk/bog/gtkb/gtkb_bwd.html
type	multipolygon
water	moat

5 members

Add 1853 fortification as area

natural	water
source	Trap, J.P. Statistisk-topographisk beskrivelse af kongeriget Danmark. 1872 https://archive.org/details/statistisktopogr01trap
start_date	1870
start_date:edtf	~1870
start_date:source	https://web.archive.org/web/20130921212343/http://www.kobenhavnshistorie.dk/bog/gtkb/gtkb_bwd.html
type	multipolygon
water	moat

5 members

Add 1872 version of western fortification

natural	water
source	Trap, J.P. Statistisk-topographisk beskrivelse af kongeriget Danmark. 1872 https://archive.org/details/statistisktopogr01trap
start_date	1870
start_date:edtf	~1870
start_date:source	https://web.archive.org/web/20130921212343/http://www.kobenhavnshistorie.dk/bog/gtkb/gtkb_bwd.html
type	multipolygon
water	moat

4 members

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