The idea is that the rock mass that was blown up during the expansion of the metro will be reused as, among other things, streets and squares in the construction of a new district as in Norra Djurgårdsstaden.

- It is good that we can reuse it, it is circular work.

But we also save transport in the city and driving on the lake is very efficient, says Fredrik Bergman, project manager for the implementation of Norra Djurgårdsstaden.