Terror to elation: Ukrainian woman’s journey from Azovstal to PoW to freedom

Exclusive: Guardian hears of ordeal in first major interview given by any of the women freed in last week's prisoner swap

It was like something from the cold war. After five months in the most notorious jail in occupied Ukraine, Alina Panina, 25, had found herself, without explanation, at the foot of a bridge over a river in no man's land with 107 fellow female Ukrainian prisoners of war.

Behind Panina lay Russian-occupied territory and her experiences of the siege of Mariupol's Azovstal steelworks, the subsequent surrender and then captivity in Olenivka prison in Donetsk. There she was witness to the aftermath of an explosion that killed 53 male prisoners, a blast said by Kyiv to have been engineered by Moscow to silence the victims of torture.