Shortly before Christmas, a hole appeared in the ceiling of our porch, which was goodness knows how old and possibly original to the building The hole looked a bit like this, only smaller.
Then it grew to look exactly like that; then it grew to look like that but even bigger. Each fall stabilised it a little, until the edges of the new hole succumbed to gravity and fell. You can see an incipient dangly bit next to the light fitting.
But no more. The entire old ceiling now looks like this: