Other tourist attractions include a "drive-in" volcano where one can drive within a few hundred feet of the gurgling, steaming mass, Sulphur Springs (in Soufrière), zip lining in at Sault Falls, Dennery, the Botanical Gardens, the majestic twin peaks "The Pitons", a world heritage site, the rain forests, several options of boat trips, Frigate Island Nature Reserve (operated by the Saint Lucia National Trust), Dennery, and Pigeon Island National Park, which is home to Fort Rodney, an old British military base.