Undergrown
Undergrown refers to a concept or state of being hidden or concealed beneath the surface, often in a literal or metaphorical sense. Literally, it can describe something physically buried or located below ground level, such as roots of plants or underground tunnels. Metaphorically, it can denote activities, groups, or phenomena that operate in secrecy, away from public view or official notice. This can include clandestine operations, subcultures, or even certain aspects of the natural world that are not readily apparent.
The term "undergrown" is not a standard scientific or technical term but is used colloquially or poetically