A 9th-century manuscript with ogham script, the earliest form of written Irish/Gaelic scribed above the main body of text (see what looks like lines and notches). This is scholastic ogham and is said to be more related to cryptography and ideas around secret forms of communication than stone ogham, which you often see as memorials and boundary markers. This is from The Ogham Project with Maynooth University, where I went to college myself, and the University of Glasgow. The ogham here spells latheirt, which means ‘drunkenness’ in Old Irish (also spelled laithirt), and may have been written by a hungover scribe after some heavy merry-making. Things like this always remind me of the humanness of folks who seem so far away in history.

(You can find out more here: ogham.glasgow.ac.uk/ind…)