Pleistocene deposits of the Thames valley. Iver, Bucks. stack of brickearth in Purser's pit, Iver Terrace.

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Pleistocene deposits of the Thames valley. Iver, Bucks. stack of brickearth in Purser's pit, Iver Terrace. Wellcome Collection. Source: Wellcome Collection.