Usually covered in fell, it also has a good amount of fat to stop it from going dry during cooking.
Some butchers will slice it for you, then tie it back together, but this needs extra care not to overcook.
Though an inexpensive cut, it can be tricky to carve owing to the different bones in it.
This cut can be used for minced lamb.
In the UK, Lamb Shoulder Square Cut is sold whole or cut in half.