Tactically , the top of Suribachi was one of the most important locations on the island .
The island is dominated by Mount Suribachi , a 546 - foot ( 166 m ) dormant volcanic cone at the southern tip of the island .
Tactically , the top of Mount Suribachi was one of the most important locations on the island .
The island is dominated by Mount Suribachi , a 546 - foot ( 166 m ) dormant volcanic cone at the southern tip of the island .