A Radio 4 documentary has just been discussing the work of Adam Lowe and his company Factum Arte, which–in the breaks between 3D-printing concrete sculptures for Anish Kapoor–has created a digital scan of the Hereford Mappa Mundi. The scan allows you to see every scar and fissure in the skin upon which the map was drawn–not the skin of a calf, apparently, but of a seriously large cow. And the facsimile recreation of the surface lets visitors run their hands across the map for the first time. (A second-best option is to run your eyes over it on the Mappa Mundi website here).

There’s a film that shows the scanning in progress here, and for a commentary by Jerry Brotton, who has been collaborating with Factum Arte, click here.