Kelo Wood
Following the path of an unsetting sun across the sky in the summer months, pine trees north of the Arctic Circle develop a coil-like grain structure that imbues the trunks of the trees with an abnormal level of strength and durability relative to their straight-grained counterparts. So much so, that kelo trees remain standing long after they have died, shedding their bark while still erect, allowing the sapwood to dry and become bleached by the sun. The resulting timber is likewise strong, as well as being unusually resistant to rot and warpage. Kelo wood also boasts a characteristic colouration: greyish-white on the outside with reddish-brown heartwood.
Kello, which is the Finnish word for clock, shares the same Finno-Ugric root as kelo. While the etymology of the words themselves are believed to have been derived from the word for bell—just as clock is in English—the inherent qualities of both clock dials and kelo wood are protracted from the relative motion of the sun across the sky in the Northern Hemisphere.