Cumbre Vieja

I see on my TV set that Cumbre Vieja, the inactive half of the
large volcanic Canary Island of La Palma is on the verge of sliding
precipitously into the sea, causing a huge tsumami; an inescapable
eventual fate for any such a volcanic island, my TV set assures me.
Imagine that, I thought, that it is possible for an island just
outside the pillars of Hercules to disappear under the sea in one
terrible night, with no further warning than a volcanic eruption?

Torsten