India, April 30 -- A massive blackout plunged large parts of Spain, Portugal, and even southern France into darkness on Monday, leaving millions without electricity. An Indian man living in Portugal with his Malaysian wife and kids has documented how they survived the 12-hour blackout.

"Portugal without electricity sent us back to the cave ages, which to be honest, I didn't mind. For a brief moment when the whole region was on somewhat panic mode, my first thought was: 'My kids are not going to have internet tonight'. How did you guys do?" reads the caption of a post shared on Instagram by the family.

They also posted several slides, along with photos, to give a glimpse of how they managed during the outage. A text insert on the first s...