Mount Gower also Big Hill, is the highest mountain on Australia’s subtropical Lord Howe Island in the Tasman Sea. With a height of 875 metres (2,871 ft) above sea level, and a relatively flat 27-hectare (67-acre) summit plateau, it stands at the southern end of Lord Howe, just south of the island’s second highest peak, the 777-metre (2,549 ft) high Mount Lidgbird, from which it is separated by the saddle at the head of Erskine Valley.