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Pegadung, Sumatra, Indonesia
A staggering sea scene
The sharp-edged sea stacks of Pegadung speak to an intense tectonic history here on Sumatra, the largest island within Indonesia and one of Earth's most volcanic places. Its mountainous spine still includes nearly 70 active volcanoes, stretching more than 1,700 kilometres from the Strait of Malacca in the north to these craggy shores in the south. Rivalling the massive isle's wild geology is its biology; Sumatra boasts unique types of elephant, rhinoceros, tiger and orangutan.
A staggering sea scene
The sharp-edged sea stacks of Pegadung speak to an intense tectonic history here on Sumatra, the largest island within Indonesia and one of Earth's most volcanic places. Its mountainous spine still includes nearly 70 active volcanoes, stretching more than 1,700 kilometres from the Strait of Malacca in the north to these craggy shores in the south. Rivalling the massive isle's wild geology is its biology; Sumatra boasts unique types of elephant, rhinoceros, tiger and orangutan.
The two-thousand-kilometre spine of Sumatra includes nearly 70 active volcanoes.
© CK NG / 500px / Getty Images 2026-09-11 08:45:51 :