Water Hall gravel pit near Hertford, October 1956.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Water Hall gravel pit near Hertford, October 1956. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Water Hall gravel pit near Hertford, October 1956. Wellcome Collection. Source: Wellcome Collection.