The Gazelle Peninsula is a large peninsula in northeastern East New Britain, Papua New Guinea located on the island of New Britain within the Bismarck Archipelago, situated in the southwestern Pacific Ocean. The Rabaul caldera is located on the northern tip of the peninsula. Upon the Gazelle Peninsula are the Baining Mountains, of which the highest point is Mount Sinewit at 2,063 m (6,768 ft). The Gazelle Peninsula houses Vulcan Crater and Mount Tavurvur, both of which conducted volcanic activity in the 20th and 21st centuries and have provided extremely fertile soils. The body of the Gazelle Peninsula is about 80 km (50 mi). The southern isthmus upon which the Gazelle Peninsula is connected to the main body of East New Britain is reduced to about 32 km (20 mi).