- It's a very big spread. Everything from settlements from the oldest Stone Age to slightly newer remains from perhaps the 17-1800s, says Magnus Djerfsten, cultural environmental specialist at the Swedish Transport Administration.

When the Ostlänk railway project is to be built, it is included that the Swedish Transport Administration must ensure that archaeological excavations are made. Since the Ostlänk is such a large-scale project geographically, there will be huge amounts of finds. The Swedish Transport Administration believes that at least 600 ancient remains must be investigated.

The finds eventually end up at the Stockholm Historical Museum, although some are already temporarily on display at the Norrköping City Museum.

- I think it is extremely exciting to be involved in such a journey, which will give us an incredible amount of new and valuable knowledge of our history, says Magnus Djerfsten.