Montagem de hidrofone no pilar sul da Ponte 25 de Abril 56/5000 Hydrophone assembly on the south pillar of 25 de Abril Bridge

The 25th of April Bridge is the centerpiece of Bill Fontana's Shadow Soundings exhibition opening at the MAAT (Museum of Art, Architecture and Technology) on October 4.

This sonic sculpture features microphones mounted on the bridge in various locations. One of these is a "hydrophone" and was placed on the south pillar of the bridge by the Hydrographic Institute and by the Navy divers.