Frozen forms of an ever-changing world sculpted by the constant flow of water and wind. These images were taken inside one of the many ice caves of Vatnajökull in Iceland. The 2,500-year-old glacier is approximately 8,300 km2 and is about 1 km thick at its deepest point. Due to rising temperatures and a decrease in snowfall the glacier is estimated to be receding at a rate of about 1 meter per year.
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