moana's home is a volcanic island, with typical columnar joints (which appeared when grandma took moana up the mountain) and flow structures (the black stone that grandma danced by the sea). In fact, except for the pile of stones in the sweater, all the islands in the film are volcanic islands.
Volcanoes bring islands and life, but also destruction and death. The goddess and the magma monster are two sides. Volcanic ash is the best fertilizer when it cools. The wind on the ocean rarely brings dust from other places. Only volcanic ash can regularly renew the soil fertility of the island. In the end, the volcanic evil god incarnates into a green island, which is what it means.
At first, there was a problem with the coconut, because the soil fertility was exhausted, and then the heroine went to sea, on the one hand, revives the navigation technology, on the other hand, tamed the volcano into a fertile field, and came back to bring her clan to settle in.
In this way, the plot is reasonable and natural. It's a pretty good movie that deserves to be rewatched many times over.
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