The backed-up code will be held inside GitHub’s vault in a disused mine Github

A plan to expand a physical backup of the world’s most widely used open-source software held inside a mountain in the Arctic will go ahead this month, despite the coronavirus pandemic.

GitHub, an online software host owned by Microsoft, has already stored the equivalent of 10,000 folders of source code files in Coal Mine 3, a disused facility on the island of Spitsbergen in Svalbard, Norway.

This month, the company will hugely expand its existing storage by adding repositories that can hold …