Ancient hunter-gatherers stocked Norwegian mountain lakes with trout 7,000 years ago
Around 5000 BC, prehistoric hunter-gatherers in Norway deliberately introduced brown trout into remote mountain lakes. Archaeologists uncovered remains of sophisticated fish traps dating back to this period, suggesting intentional ecosystem management. These early communities transported live fish across difficult terrain, including past waterfalls, to establish new populations. The practice represents one of the earliest known examples of humans actively shaping their environment for sustainable food production. The trout descendants of these ancient fish are still caught by anglers in Norwegian mountain lakes today.
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