Sammy Roocroft uploaded this picture to Facebook last week. What happened next was pretty extraordinary.
Sammy Roocroft, who teaches years 5 and 6 at Markland Hill primary school in Heaton, got her class to take this picture on Monday last week.
She posted it to Facebook and encouraged people to share it. She wrote on the post: "Please make sure you are clicking on the original picture and say where you are!"
Now then, here are some numbers.
And here are some replies to her post.
In fact scrolling through the comments is kind of a crazy experience.
