Final answer:
The question appears to be about a fictional character, General Utopus, so there is no historical record of this figure destroying part of an island.
Step-by-step explanation:
The question relates to a character named General Utopus in a fictional context, which does not correspond to a specific historical event, person or location. However, if we associate the concept of destruction of parts of an island to historical events, the Minoan city of Akrotiri on the island of Thera (present-day Santorini) provides a historical example of such destruction. It was the volcanic eruption on Thera during the mid-second millennium BCE that entombed the city in pumice and ash, leading to the preservation of its frescoes similar to those in Pompeii. It's crucial to mention that General Utopus is not an actual historical figure associated with this event.