Made by X51 (Flickr: https://www.flickr.com/photos/x51/ Web: http://x51.org/) [CC BY-SA 3.0], via Wikimedia Commons
Made by X51 (Flickr: https://www.flickr.com/photos/x51/ Web: http://x51.org/) [CC BY-SA 3.0], via Wikimedia Commons
The entrance of the Svalbard Global Seed Vault.
pixabay
