Trash. Nobody likes it, yet we create lots of it.
Humans are hard on the land. Not as often, but still today some people choose to save money and not pay for trash pickup and use their back woodlot as the disposal area for the family. Leaving a mess for future generations to clean up.
Holley Savanna like many properties was used as a depository for the family trash back in the day. Thankfully they confined it to a couple of locations.