The excavated area was situated in the left hand corner of this panorama picture.
The excavations were rescue excavations conducted because of a break in the pipe system underneath the square. The textile fragments found during the excavation are now out of the conservation laboratory. The textiles date to around 1600-1700 AD. Below is a link to a short article about the conservation process of the textiles (in Finnish). All the pictures below by courtesy of Helsinki City Museum.