Found these strange dirt-like veins running up my basement wall. They crumble when touched but seem hollow inside. Do I have a leak or something else?

sources, such as the wooden structures of your home. The tubes provide a controlled environment for the termites, maintaining humidity and protecting them from predators.
Typically, these tubes are about as wide as a pencil, ranging from 1/4 inch to 1 inch in diameter. They can extend several feet along walls and surfaces, often branching into complex continue reading …