Clarke, who plays Daenerys Targaryen on the HBO show, revealed that she walked around London for “three hours aimlessly” after being handed the script for the upcoming eighth season.
“It might as well have been raining and I would’ve just walked in it not knowing what to do,” she told Press Association.
There were “loads of tears” filming her last words, she said, adding: “That was the moment I realised that alcohol can also be a depressant.
“I was kind of nursing a glass of wine going, ‘I don’t know why I’m not getting any happier from this!”’
Comparing the experience to filming her first day scene, Clarke said she was feeling “equal amounts of fear”.
The actor’s comments come after co-star Kit Harington, who plays on-screen lover/aunt Jon Snow, said he experienced “grief” after filming the end of the show.
Game of Thrones returns to television screens 14 April. Read about everything we know about the eighth and final season of the show here.
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