Why Ball’s Pyramid
Ball's Pyramid is an uninhabited, sheer volcanic stack located in the Pacific Ocean between Australia and New Zealand. Situated 20 kilometres southeast of Lord Howe Island within Australia's Lord Howe Island Marine Park, it is recognized as the highest volcanic stack on Earth, standing 572 metres tall. The slender basalt landmark measures 1,100 metres in length and 300 metres across, forming the remnant core of a caldera and shield volcano that originated 6.4 million years ago.
Geographically, the outcrop rises from an underwater plateau on the Lord Howe Rise, a submerged portion of the continent of Zealandia. This submarine platform measures 20 kilometres long and 10 kilometres wide at an average depth of 50 metres, divided from Lord Howe Island's own platform by a 500-metre-deep underwater canyon. Several small rocky islets surround the spire, including Observatory Rock, Wheatsheaf Islet, and Southeast Rock. Strong ocean conditions typically encircle the site, creating a challenging environment for boat landings.
Naval officer Lieutenant Henry Lidgbird Ball of the Royal Navy first documented the structure in 1788. Later expeditions in the nineteenth century surveyed the surrounding waters, leading to the first documented landing by a geologist in 1882. Climbers targeted the steep rock face in the mid-twentieth century, achieving the initial summit ascent in February 1965. Authorities implemented climbing restrictions in 1982 and a complete land ban in 1986; today, access remains tightly governed and requires specialized permission from state ministers.
Despite its sparse terrestrial environment, the location provides a habitat for rare flora and fauna. Notably, it supports the only surviving wild community of the Lord Howe Island stick insect, an invertebrate once thought extinct until living individuals were located on the rock faces in 2001. The insects reside within small patches of vegetation, such as sedges and Melaleuca howeana shrubs, which grow in rock crevices nourished by natural water seepage.
The marine zone encircling the basalt peak is similarly distinct, harboring species such as the Ballina angelfish. Operating at depths from 15 to 120 metres, this endemic fish frequents deep reefs, seamounts, and submerged rock formations. The underwater crevices and boulder fields around Ball's Pyramid offer a rare setting where this species has been documented in its natural environment.
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