Papua New Guinea Cave Exploration Group (PNGCEG)Bourke, Mike2019-01-312019-01-3119731973-19820310-3773http://hdl.handle.net/1885/15547519 pagesapplication/pdfen-AUAuthor/s retain copyrighthttps://creativecommons.org/licenses/by/4.0/Papua New Guinea Cave Exploration Group.Caves -- Papua New Guinea -- Periodicals.Speleology -- Periodicals.Caves.Speleology.Papua New Guinea.Chimbu, West Sepik, Manus, New BritainIntroducing "Niugini Caver" ...... and This Issue -- Bibima Cave, Porol Escarpment, Chimbu District / Kevan Wilde and Van Watson -- The Hinderburg Wall / Malcolm Robb -- The Contributors -- Loniu Cave, Los Negros Island, Manus District / H. Gallasch -- Caves of New Britain. A Preliminary Report / R. Michael BourkeCreative Commons Attribution 4.0 International (CC BY 4.0) licence