Over on Identity Designed is a really nice identity by Astronaut Design for Antarctic Voice.
Antarctic Voice is a project that aims to express the voice, the silence and the magic of the unattainable continent, Antarctica.
ID commenter Meenakshi points out the genius of the AV logo:
The beauty of this identity lies in the –
Symbolic representation of the Iceberg (the peaks above and below a base level) and the Voice (the wavelength) – both at a go, Simple yet outstanding!
Excellent.