Truly horrendous, thanks for posting. I had a flat in Porto at the time the new metro was built. I feel like part of my heart will always be there. I know all the streets and scenes in the video you posted and am shocked and dismayed to see something seemingly impossible, given the height above sea level just there. Nowhere Is safe, actually.
The other thing we should realise is that things like this no longer seem to be news. The news agencies are no longer delivering what they are supposed to deliver. Indeed we hadn't seen or heard these newsworthy events from Portugal, in UK.