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According to an elder in his family who had participated in the Vietnam War, this primordial tropical rainforest is a standard green hell.
For those who haven't gone through corresponding training and are lacking supplies, entering this area is basically synonymous with suicide, at least a significant number of deaths during the war years can be attributed to the environment.
As for Leonard and others, the next issue was how to find what they were looking for in such a green hell, so they now needed to discuss and determine their next course of action.
"This is indeed not easy to find," Nelson said with a slightly troubled expression as he looked at the map before him, which showed only the blue of The Great Ocean and the greenery. Because any sane person would realize that the upcoming search work would not be easy.