[Question_Assumptions]

The Theran eruption should have not only been visible but disrupted sea trade and the Minoans and impacted the climate. It's not every year that you see a huge pillar of flame and smoke on the horizon.

[Dog Gone]

I think the eruption was the Pillar of Fire by Night and Pillar of Cloud by Day.

Of course, that only works as a beacon to Canaan if you're coming from Iraq or possibly Saudi Arabia.

If you're using it to exit Egypt, you hit the beach going north. It doesn't work.