Proving Grounds

Overview

The Proving Grounds are a series of rooms where Big Daddy / Little Sister teams were apparently trained to work together. The winding hallways are spotted with fresh corpses from which Little Sisters gather ADAM while Big Daddies protect them. Jack must follow a Little Sister to proceed through specially locked doors to get to Fontaine. To Tenenbaum's chagrin, the little sisters remember their training well, and stop to harvest ADAM several times before leading Jack on.