Must be seen enlarged. From last weekends concert with Bryan Ferry at Dalhalla. It was my first visit and it was amazing to se this place. Dalhalla is an amphitheatre in a former limestone quarry and used as a summer music venue. The quarry is 60 metres deep, 400 metres long and 175 metres wide. It was opened in 1995 and has 4000 seats. The acoustical qualities are comparable to the best outdoor stages in Europe.