So, can an independent explorer scuba in there with a light and camera, at night perhaps.
Like the submersibles viewing the Titanic.
And report?
Scuba in that sick water and you’d probably die, and not in a nice way.
..was "the pipes might be messed up" - when the plan was to use SONAR to detect what was in the pond - which doesn't interfere with piping, lining or structure of the pond.
"Recent reports describe the water as green and stagnant, with trash, human waste, and visible signs of drug use."