Swedish to English Social Sciences Archaeology

This concerns a sign describing an archeological site in Sweden. The sign is meant to be read by laypeople and not just archeologists. The sentence in question reads: "Den består av en övertorvad stenpackning och har en kant av stora stenar."

On Wikipedia, the term is described as: "Stenpackning används av arkeologer vid definition av stenpackning av olika utföranden och som kan liknas med stensättning," which is not exactly crystal clear - kind of like saying: "Flubb-flubb is used by scientists for defining different kinds of flubb-flubbs..."