Not all rocks are old…. This exhibit at the Natural History Museum was formed in a coal mine in the 1800s, when the white mineral barium sulphate met coal dust. This only happened when miners were at work, so there’s a wider gap on Sundays, or “a calendar in rock” as the museum calls it.
- London – Lambeth – Imperial War Museum (Troops on Sheringham Beach)
- London – Westminster – Tate Britain (Lady Kytson by George Gower)