Hilltop speaker lets you project your voice from your cell phone throughout the land

The “Telemegaphone Dale” by Magnus Torstensson and Erik Sandelin is a
loudspeaker post on top of Bergkletten in Dale, Norway. To use the
project, just call it with your cell phone and your voice is amplified
and played out the hilltop speaker. The project officially opens on
August 2nd and is part of a larger project called “Parafunctional
Payphones” that addresses public, telephonic art installations.