"Not subs. Actual people who are bought and sold and are absolutely not here of their own volition. Muggles mostly. Some Squibs. It was first established for the Death Eaters and their spoils of war, you know. That’s when I was introduced to this place and its charms. They brought me here and forced me to see... things. To toughen me up. Luckily I wasn’t forced to participate. No, I haven’t been here since then and yes, sadly it still exists. This  was your second question and I answered some others out of courtesy, mind you."