The main structure at the supply depot, the docks are designed to accommodate small to medium sized boats which would deliver food, general supplies, and luxury items such as books and newspapers for the staff. Originally a wooden construction, the docks were quickly reinforced with some concrete and steel to ensure they would last for the duration of the asylum's life on the island. The concrete gangways and metal railings that now make up the docks have proven to be sturdy constructions, even if they are not the most glamorous.

The storehouse is used for storing everything that wasn't required on-site at the asylum or the staff living area. The building is essentially a large warehouse filled with crates full of non-perishable food in case of a late shipment or storm. Sitting outside the front of the storehouse on four flat, deflated tires is a broken down and rusted truck originally used to ferry larger quantities of supplies to the asylum and staff quarters. At the entrance to the storehouse is a guide map to allow staff members to find exactly what items they want from the rows of stacked crates. As a large concrete building the storehouse has been generally untouched by any flora, although numerous rats and insects have made the building their home, with many spider webs and rat droppings covering the area. There is also a relatively large hornet nest located in the corner of a room that could have been an office.

At the front right-hand side of the storehouse is a stairwell that leads to the helipad located on the roof. Originally conceived to help with deliveries, this idea was quickly abandoned when it was found that the tumultuous weather around the island meant there would be continual delays. Instead, the helicopter was converted for use in case of a medical emergency necessitating a trip to the mainland. Now, though, the helicopter has been blown sideways and is delicately balanced half on the helipad and half off of it, perpetually appearing to be a strong breeze away from falling off the roof.

The shoreline by the docks is made up of various sizes of shingle rocks that need to be traversed over before sand can be reached. Large tide pools and rocky outcrops are also visible, with the waves crashing around them. The rock formations add to the danger of the area, as the swell they help cause makes venturing out into the water a perilous prospect.