Wollumbin National Park, Ancient volcanic peak in New South Wales, Australia.

Wollumbin National Park covers 4,117 hectares in northern New South Wales, near the Queensland border. It surrounds Mount Warning, a 1,157-metre peak that is the eroded remnant of the Tweed shield volcano. Subtropical rainforest with stinging trees, Moreton Bay eucalyptus and figs covers the lower slopes, while heathland grows on the summit.

Lieutenant James Cook named the peak Mount Warning in May 1770 while sailing the Endeavour north along the coast, marking the offshore reefs his crew encountered. The park was reserved for public recreation in 1928 and dedicated as a national park in 1966. It became part of the Gondwana Rainforests of Australia World Heritage Site in 1986 and was added to the Australian National Heritage List in 2007.

The name Wollumbin comes from the Bundjalung language of the local indigenous people. The mountain holds deep significance in their traditions and stories, serving as a landmark that has shaped how people understand this landscape.

The park has marked walking trails that pass through the rainforest with varying difficulty levels for different visitors. Access to the area is easiest from Murwillumbah, the nearby town that serves as the main starting point for exploring the trails.

Wollumbin is the eroded remnant of the Tweed shield volcano's central vent; the surrounding caldera rim and valley are what is left of the wider edifice. The summit stands at 1157 m, and the park was reserved for public recreation in 1928 before becoming a national park in 1966.