Thunder at the Shore

Publisher's blurb: As if getting shipwrecked wasn't bad enough. As you became stranded on the lush shore of this mountain island, you hear a thundering sound coming from the mountains. Even though the storm that destroyed your ship is over, the thunder isn't stopping. You look up the small and stony path into the mountains and see smoke rising from behind some big rocks. Where are you and how can you get away from here?