Dormant volcano Ka ##ki on the Big Island is the highest mountain in the state . Drive up the flank of Maui 's volcano Haleakala to see the surreal , lunar - like landscape . ' i is one of the island 's greatest natural wonders , and Numerous helicopter companies make up - in - the - air jaunts over Kaua ' i .
Dormant volcano Ka ##ki on the Big Island is the highest mountain in the state . Drive up the flank of Maui 's volcano Haleakala to see the surreal , lunar - like landscape . Numerous helicopter companies make up - in - the - air jaunts over Kaua ' i .