A Biofact is a remnant of sophontic activity involving organic matter such as foodstuff remains (refuse pile) or the bones of dead sophonts (burial grounds).
Please refer to the following AAB Library Data articles for related information:
Biofacts are evidence of intelligent activity, usually of sophonts or protosophonts, but some intelligent creatures might also leave behind biofacts in the environment.
History & Background (Dossier)
A famous Terran example of biofacts is the Elephant Graveyard, a place where an ancient Terran species invariably goes to die, depositing large numbers of bones behind. Some scientists consider elephants to be protosophonts.
References & Contributors (Sources)