In 1987, Ior Bock and his supporters began fund-raising in order to finance excavation of a sediment-filled cave that is situated under the hill 'Sibbosberg', situated north of Gumbostrand in Sipoo, 30 km east of Helsinki – at the estate Bock had inherited from his parents. The cave was supposed to lead to a furnished temple-chamber inside the Sibbosberg, known as the "Temple of Lemminkäinen." Inside of the temple chamber, a spiraling hallway is described, with small hall-rooms that were created to hold the collected treasures from each generation from the heathen culture of ancient Finland. The time of ongoing storage is counted in millennia, accumulating a large treasure chamber. The last storage was done in 987 when the entrance-hall was filled and the entrance-door closed and hidden, as foreign warlords would enter the Baltic area and - by the year 1050 - reaching and conquering the major cities of southern Finland.