Barunguba is part of the creation story linking Gulaga, Barunguba and Najanuga. All are key aspects of the landscape in and around Narooma. Also named Montague Island, this place 9km offshore from Narooma is home to the largest fur seal colony on the NSW coast and is a breeding ground for around 15 bird species. It is an important breeding ground for around 12,000 Little Penguins which can be seen coming ashore at dusk after feeding at sea, while dolphins, whales and endangered grey nurse sharks can all be seen at various times of year.
The lighthouse on the Island was designed by James Barnet and NSW Colonial Architect and built from 1878 to 1881 by J. Musson and completed By W. H. Jennings. The lighthouse and quarters are now part of the Montague Island Nature Reserve.