Here's a detailed treasure map of the underbelly of the Leviathan Raid in Destiny 2
The Leviathan Raid in Destiny 2 is a labyrinth of hallways and encounters that can be daunting and confusing if you don't know where you're going.
Once you've conquered the raid and are given three different keys for each week, you will need to navigate the underbelly of the huge ship to find each key's corresponding chest. Inside each chest will be loot like Calus Tokens and a chance for Legendary and Exotic engrams.
Thanks to a few intrepid Reddit users, the maze that is the Leviathan's underbelly is now way less confusing.
The original map was made by "addesso" on Reddit, and later remixed by "ScoobyDeezy" who added a different perspective and made it three-dimensional and a bit easier to comprehend.
To get to the pipe entrance at the bottom of the map, start the raid anew. Drop down to the area directly underneath you and move forward until you find an area with six levers. Number the levers one through six from left to right and assign a team member to each one. The levers must be pulled in a specific order to open the pipe entrance above.
Pull the levers in this order: one, five, three, two, four, six. If done correctly, you will hear a sound and get a notification in the bottom left of your screen that the pathway is open.
Return to the bridge above you. Follow the pathways up until you reach the bottom of a large open area, where the two blast vents will launch you to near the top of the main entrance.
You will see a sewer region in the middle with pipes that can be jumped on. Follow the pipes down and you will see a large fan at the end of the pathway, with a room to your left. In that room is a switch that will activate the fan and propel your team upwards into the underbelly.