https://www.vice.com/en_us/article/8xwpzb/mongolias-eternal-ice-is-melting-revealing-ancient-artifacts

Precious artifacts have been tumbling out of melting ice patches and glaciers in Mongolia: an arrow, painted red at the tip, that may date back thousands of years to the Bronze Age; a mass animal graveyard containing the remains of dozens of bighorn sheep; remnants of a beautiful rope braided from horsehair.

These ice patches, known as Mongolia’s “eternal ice” because they normally stay intact even in summer, are melting at an accelerated rate due to climate change.