Ball Pyramid is the world’s tallest sea stack. It is the remains of a shield volcano formed about 7 million years ago. It is 562 meters high and is located southeast of Lord Howe Island in the Pacific.

Ball Pyramid is the world’s tallest sea stack. It is the remains of a shield volcano formed about 7 million years ago. It is 562 meters high and is located southeast of Lord Howe Island in the Pacific.