Last week eight members of GeoSuffolk monitored the County Geodiversity Site at Orwell Country Park. The upturned blocks of septaria, trees clinging to the base of the cliff and the green line of seaweed show that this is an active geological site. The rock and the trees show that the land has moved in the not too distant past and the seaweed and beach shingle are regularly moved by each day's tides.
Elizabeth Cobbold's story has been told in The Suffolk Natural History 2020 (the Suffolk Naturalists' Society Transactions) by Bob and Caroline Markham. It has a full catalogue of her specimens figured in James Sowerby's Mineral Conchology in the early 1800s - including Acila cobboldiae (in the photo), named after her. See the SNS website and GeoSuffolk Notes no 70.