The Hawaiian landmark known as "Diamond Head" was formed from what?

More Questions:

A Bloody Mary is a cocktail made with tomato juice and what type of alcohol?

Carl Lewis won gold medals in what event at four consecutive Summer Olympics?

What fruit oil is added to tea to create Earl Grey tea?

What artist composed the opera "Tannhauser"?

What George Orwell book foresees Oceania, Eurasia and Eastasia?

What mountain is the tallest point in Pakistan?

In which decade was Louise Brown, the first test tube baby born?

What astronomical aid takes its name from Greek words meaning "far seeing"?

How many tentacles does a squid have?

What’s the term for mass per unit volume?

What does the acronym SETI stand for in "SETI Institute"?

Who plays the coach of the German dodgeball team in the 2004 movie "Dodgeball: A True Underdog Story"?

What large amphitheater in Rome was opened to showcase gladiator combat?

Who's the lead singer of the band "Simply Red"?

What continent is Sao Tome and Principe located in?