Abandoned buildings have always been my urbex flavor of choice moreso over drains, tunnels, or rooftops- but when I saw this wide open outfall while visiting my folks a few months back I naturally had to go check it out.
This buried creek runs for about a mile through an RCP drain 8 feet in diameter that gradually shrinks to 6 feet with no major branching lines- pretty boring. The last 100 yards or so were uncovered as part of the local riverfront restoration project a year or two back making it accessible so I'm pretty sure I'm the first person to explore this location.
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Not super interesting but I'd like to think I got some decent shots.