All preparations done, the team set out across the bridge onto the island proper. Under the guidance of the ranger, they quickly found an overgrown path that led in the right direction. After only a few meters the sound of the harbor were gone and replaced by the noice of exotic birds and rustling leaves. More often than not, the bush was so thick that only the machette provided any chance of getting ahead - even with the comparatively easier path along the old road that had at least prevented trees to take root there.
About two hours in, something in the atmosphere changed...

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Everyone a perception check and a nature check - don't forget relevant skills and class abilities