Clay pit showing permanent water, Herts/Beds.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Clay pit showing permanent water, Herts/Beds. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Clay pit showing permanent water, Herts/Beds. Wellcome Collection. Source: Wellcome Collection.