BALFOUR AVE.

This box was spotted by Chrysoula on the 16th of Oct 2016 at 3.45pm:
Matilde and I were heading to record the boxes I found a few days ago, when I saw another box and realised that it was singing as well. I was excited when I spotted my first box, so finding two more within a few days was just fantastic.

Producing a continuous sound composed of:
92Hz
120Hz
178Hz
235Hz
408Hz
580Hz
1184Hz
1327Hz
3282Hz

Click here for an overview of the pinned locations.