The 6633 Arctic Ultra is a 620-kilometre race across the Arctic Circle. Competitors must be self-sufficient and haul their own food, water, and shelter. Hauling a sled 620 kilometres across the ...
The subterranean aquifer takes in mass amounts of snowmelt and rainwater, where it percolates for seven to 10 years before fueling many of Oregon’s most famous rivers through gushing springs.
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