2016 Papua New Guinea – Ambungi Island
We visited Ambungi Island examining the caves reportedly used by a sauropod in recent years. Brian and I and a large group of islanders and went to the caves at night. Conflicting reports from the native divers led me to suspect it wasn’t really a deep one. I went back and physically examined the cave the next day in daylight. The water surrounding the entrance was maybe 15 feet at its deepest point. The cave may be about 10 feet wide and 10 feet deep. I placed a trail camera for a week above a secondary purported cave with no success.
The last reported dinosaur sighting around the island was back in July of 2015 by an adult male who wished to remain anonymous. While in a canoe he watched a brown long-necked creature with a saw-like ridge on its back moving in the open ocean in the afternoon.
Ambungi Island appears to be visited at times by these creatures but I saw no surface caves capable of hiding an animal larger than an adult human. The island is comprised of pocketed limestone that has the appearance of Swiss cheese or slag discarded from an iron or steel mill. (I’m guessing most of the islands in New Britain, if not all, have this general appearance.) Geographically speaking, just like Swiss cheese, there were no real continual holes to be found-just many odd shaped pock-marked ones. The only sizable holes on the island that I saw were along the shores where water erosion has occurred on a consistent basis creating small bluffs or overhangs.
Article by Dr. Karl Shuker
https://karlshuker.blogspot.com/2019/03/seeking-neodinosaurs-in-new-guinea.html