Asia, Southeast Islands: Figure 3. Warp Drive, the major abandoned passage in the Selminum Tem Cave in Papua New Guinea. (Photo by David Gillieson)

DOI link for Asia, Southeast Islands: Figure 3. Warp Drive, the major abandoned passage in the Selminum Tem Cave in Papua New Guinea. (Photo by David Gillieson)

Asia, Southeast Islands: Figure 3. Warp Drive, the major abandoned passage in the Selminum Tem Cave in Papua New Guinea. (Photo by David Gillieson)