Hoopoe's Shamir

To build the First Temple, king Solomon had to use no ordinary tools, but a Shamir - a mysterious substance, sometimes described to be a worm or a worm-like creature, that could cut the stones with them remaining "in their fullness". A hoopoe bird was guarding the Shamir, using it to cut open rocks in the mountains so that plants might grow from them.

Happy Tu Bishvat! even though this is not a holiday-related piece.