"Capsule" redirects here. For the object in Kate's flashbacks, see time capsule.

Jack, Kate, Sawyer, and Hurley discovered the capsule dump when Michael led them to recover Walt.

The dump was the destination of all the capsules or items sent through the pneumatic tube located in the Pearl, including Locke's copy of the blast door map. The capsules contained logbooks written by the inhabitants of the Pearl. It appeared that the capsules had not been recently collected or studied (or may never have been collected). This may be because no one was left to collect them following the Purge ("The Man Behind the Curtain") or because the real purpose of the Pearl was not to keep these logbooks. The goal of the experiment and the reasons for its long duration (evidenced by the number of capsules at the dump) have not been explained, although is most definitely the same reason that the people in the ? thought they were doing it for the people in Desmond's hatch. ("Live Together, Die Alone, Part 2")

Because the capsules appeared in piles, it could be concluded that there may have been more stations that had similar pneumatic tubes leading to the same place, but the exits no longer remained. It could also be assumed that this was the only way the producers could get that many capsules to stay in one place and not roll down the hill.

Jack, Kate, Sawyer, Hurley, and Michael discovered the capsule dump while on their way to retrieve Walt from the Others. It was here that they were ambushed and taken prisoner by the Others.