How was Maui Nui formed?

Maui was once part of a larger ancient island called Maui Nui, which is associated with the volcanic island geography of the Hawaiian archipelago. Today, the modern island of Maui is dominated by two distinct volcanic features, Haleakalā and the West Maui Mountains, connected by an isthmus. While the sources note its volcanic origins and former larger landmass status, specific geological formation mechanisms of the ancient mega-island are part of the broader Hawaiian island chain development.

What we know

• Maui was once part of a larger landmass known as Maui Nui. [2]
• The modern island of Maui is dominated by two volcanic features: Haleakalā in the southeast and the West Maui Mountains in the northwest. [1, 2]
• Haleakalā and the West Maui Mountains are connected by an isthmus about six miles wide. [2]

Where to go next

• what followedWhat are the individual islands that formed from Maui Nui?
• how it workedHow do shield volcanoes create Hawaiian islands?
• a case in pointWhat is the geography of Haleakalā volcano?
• the bigger pictureHow does the Hawaiian archipelago fit into Polynesia?
• an unexpected connectionHow do lost lands and sunken islands appear in mythology and science?

Sources

• [1]Maui (Wikidata Q188705) · CC0 1.0
• [2]Maui · CC BY-SA 4.0
• [3]East Molokaʻi Volcano · CC BY-SA 4.0
• [4]Lost lands · CC BY-SA 4.0
• [5]Polynesia · CC BY-SA 4.0