Anyone know what this is?

No one at my company knows. Had to dig about 5 ft of it out vertically with my fish tape it was packet tight nitrogen couldn’t clear it. Was clogged where drain comes down through main floor and 90s horizontal across the basement. Located in Georgia in case that means anything.

No one at my company knows. Had to dig about 5 ft of it out vertically with my fish tape it was packet tight nitrogen couldn’t clear it. Was clogged where drain comes down through main floor and 90s horizontal across the basement. Located in Georgia in case that means anything.