Global warming happend many times in different time periods all the time, eg. The Roman Warm Period or The Medieval Warm Period .

The Roman Warm Period, or Roman Climatic Optimum, was a period of unusually-warm weather in Europe and the North Atlantic that ran from approximately 250 BC to AD 400.

The Medieval Warm Period ( MWP) also known as the Medieval Climate Optimum, or Medieval Climatic Anomaly was a time of warm climate in the North Atlantic region lasting from c. 950 to c. 1250. Thousands of objects in the Innlandet region proving that a mountain pass served as an important trade network.

There is surely little upside to the environmental changes posed by global warming, but nevertheless, a group of Norwegian archaeologists is seizing the opportunities presented by the country’s rapidly melting glaciers, is telling Artnet News.

That group is Glacier Archaeology Program—snappy internet alias: Secrets of the Ice—and since receiving permanent government funding in 2011 it has been responsible for 90 percent of Norway’s glacial finds.

Granted, the group’s success is partly tied to the topography of Innlandet. The county boasts many of Norway’s highest peaks, and the team has pursued salvaging artefacts from remote locations in a comprehensive and systematic manner. To date, it has made 4,000 finds across 66 sites.

The most recent discovery was a wooden arrow with a quartzite tip and intact feathers. The Jotunheimen mountain ice had preserved the arrow so well it appeared new. In fact, it is an estimated 3,000 years old, with archaeologists confident it belonged to a reindeer hunter in the late Stone Age or early Bronze age. It was one of roughly 250 objects found this season.

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The glacier finds have revealed a great deal about the people who used to live in the high mountains. Archaeologists are now more familiar with how arrows and skis were made and have uncovered organic materials previously absent from the archaeological record.

More generally, it has changed how archaeologists think about what life was like in the mountains. “The finds show the mountains were not remote in the past,” Pilø says. “They were used intensively and were connected to the outside world.” Unfortunately, that may soon be the reality once again.

Read the full article here.