I guess your post is a troll, but I will provide some context anyway
The magnitude 9.0 earthquake off Japan in 2011, the biggest to hit the nation in recorded history, generated a tsunami that was up to 40 m high in a few restricted areas along the coast of Japan itself, but less than 3 m everywhere else the waves reached. A tsunami wave from Toba, North Sumatra would need to travel across the Indian Ocean, around South Africa and up almost the entire South Atlantic ocean into the North Atlantic to hit Cape Verde (literally the equivalent of half way round the world). If, indeed, the tsunami was 170-270 m high when it hit Cape Verde, it is frightening indeed to imagine the height across Asia, East Africa and the Western coasts of the Americas. Indeed, the impact would have been so great that I wonder why evidence has not been found earlier.