In Yakutia, Russia digs for diamonds in permafrost

Diamonds are forever, and so is the permanently frozen ground of Yakutia in north eastern Siberia, home to huge diamond deposits that ensure Russia's supremacy in world production of the luxury stone.

source https://www.lifetechnology.com/blogs/life-technology-news-blog/in-yakutia-russia-digs-for-diamonds-in-permafrost