Archaeologists dug up some 700,000 objects during the building of the new Noord/Zuid metro route, ranging from modern mobile phones to jewellery and thousand year old domestic waste, broadcaster Nos said on Wednesday.

The oldest object, which was not named, dates from 2400 years BC, city archaeologist Jerzy Gawronski told the broadcaster. Most objects were found in the area between the Rokin and Damrak, in the heart of the medieval city where the Amstel river used to run.

Photos of the haul published last December show neatly arranged rows of pottery, weapons, glassware, coins, nails and even camera film.

Some 8,000 to 10,000 of the items will be put on display next to the escalator in the Rokin metro station, Gawronski said.