To be fair, it was starting to go and I knew its life was limited. Just hoped it could hold until Spring. Probably looking at a grandsworth of my dry-stone wallers
We found a rogue root from a nearby large buxus had threaded its way through the wall.
I'll take the opportunity to run a spare soil pipe vertically down on the garden side and come out via a duct at the bottom as we did get water pooling up there.
A Summer's view from the opposite side.
If opportunity doesn't knock, build a door.