Ark Chest
The chest is located on the platform just before the ark.
Storage Containers
1. Storage Container
When you first pull up to the ark, head past the roadblocks and straight ahead (west) to find the container on a table to the left of a sealed metal door.
2. Storage Container
Turn around and head north up the metal steps to find the chest located on a table to the right.
3. Storage Container
From the previous container, head southeast along the walkway. At the end, turn left and head under the metal overhang. As soon as you pass under the overhang, jump on the two wooden crates on the right. From there, double jump onto the metal overhang (double jump is acquired in the ark here) and then double jump onto the roof to find the container on the roof.
4. Storage Container
From the previous container, drop down onto the metal overhang and head west into the courtyard just before the ark. The container is located on the north side of the courtyard next to a building with a giant white skull.