I end up riding behind these two chaps on my way to the Copenhagenize Consulting offices in the mornings. The new Metro line is underway and the first phase - like in any many cities with a long history - involves archeologists and historians from the Copenhagen Museum.
You can't stick spade into the ground without hitting history so archeologists are on the front lines when excavation begins.
The two chaps in the photos ride through town with their gear, heading for the dig, on two of the Copenhagen Museum's fleet of short john bikes.
Spotted this the other day. A WW2 bomb shelter under City Hall Square. Not exactly old, of course, but still interesting to see it dug up. The text reads; "Abuse (of the facility) will be punished according to the law."