mold behind drywall near plumbing 5

https://moldbehinddrywallplumbingplus.greyhavendaily.com/posts/the-hidden-problem-of-mold-behind-drywall-near-plumbing

A musty smell was coming from the bathroom wall, and when I peeled back a corner of the drywall near the plumbing, I found black mold spreading like veins behind it—the slow drip from a pipe had been keeping that space damp for months, and now the drywall was soft and crumbling.