Paint us boggled

[muninnhuginn]

We'd just wandered over to the MI5 website (as one does), and noticed an indecipherable squiggle at the bottom of the home page. Which we pressed. And got to this. Nope, we can't find anywhere that'll translate for us. We assume it's a mirror, but there's no way of checking (without intensive language tuition). If we were native Welsh speakers we'd be a tad put out.