Great image! I am not a Bulgarian so I can only say that to me the message is that we all have a burden but keep moving forward, no matter how difficult the struggle. The size of the woman and the size of the people in the monument are about the same, there are so many parallels here I could discuss them for hours. Powerful photograph.
I used ORWO NP a long time ago, wasn't sure it was still around.
Curt