According to Timo Miettinen, leading archaeologist in Kymenlaakso, the findings are exceptional and the Ahvenkoski grave can be considered the most significant Viking Age or Crusader period burial site discovered in the Gulf of Finland. Previously it was thought that the coastal side of the Gulf of Finland was completely uninhabited during the late Iron Age.
When researchers of the Finnish National Board of Antiquities conducted their own survey of the area in 2005, nothing was found. Significant portions of both sites were destroyed by construction of a new highway from Helsinki to Kotka, without conducting proper scientific investigation.