Ever wonder what a cast iron sewer pipe looks like underground? What's that mystery blob at the end? Video shot with a sewer inspection crawler/robot.

@insightvisioncameras Ever wonder what a cast iron sewer pipe looks like underground? What's that mystery blob at the end? #WhatsInMySewer #WhatIsThat #SewerExploring #CastIronPipeInspection ♬ original sound - InsightVision

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