To cook fish, which of these is the best way to make a primitive oven?

Answer Burying hot rocks in the sand

You can make your own oven by burying hot rocks in the sand. Heat them in a fire for a few hours, bury them in a hole that's a foot deep (without burning yourself!), and then wrap your fish in green leaves and place them over the rocks. Cover everything with sand, and after an hour, you'll have home-cooked fish!

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