This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Puhelinkeskus viestikeskus Lokki . en Telephone exchange of communication centre Lokki in Finnish supreme HQ museum fi Viestikeskus Lokin puhelinkeskus Pmajamuseossa own MKFI Manual telephone exchanges Communications center Lokki July in Finland Taken with Canon EOS Taken with Canon EFS mm IS USM Files by User MKFI