Hint

Loong Tuesday of Teaching (that's what it will be called from now on), the highlight of which was finally making some headway on photos and posting these embarrassingly overdue ones below. The photo for today is merely a taster.

https://www.blipfoto.com/entry/2096059140089578695
https://www.blipfoto.com/entry/2096059671428204244
https://www.blipfoto.com/entry/2096060199365249669
https://www.blipfoto.com/entry/2096061522500387357
https://www.blipfoto.com/entry/2096062485818770215
https://www.blipfoto.com/entry/2096062990074774678