Reijo Kela has never given an official interpretation. Each visitor decides what they see.
Some read it as a tribute to the dead of the Gulag, silent under Stalin's labour camps. Others see the fallen of the Winter War — Soviet and Finnish soldiers lost in the 1939-40 conflict that defined this border region. Others see the disappeared — anyone who vanished without a grave, without a name. And some, simply, see themselves: quiet, lined up, waiting, facing the road.
The silence here is not absence. It is a choice.