Juneau, Alaska avalanches outside Juneau heavily damaged the electrical lines providing Juneau with power, knocking the hydroelectric system offline and forcing the utility to switch to a much more expensive diesel system. Juneau, Alaska, shares its eastern border with the Canadian province of British Columbia. It is the only U.S. state capital to border another country. The capital of Alaska is on a threshold between hot and cold temperate climates as well as hemiboreals with seasons and temperatures much milder than eastern Canada. If considered the average temperature of January, 32 °F (0 °C), instead of another Juneau isotherm falls in a
Juneau gold belt fissure fillings of the area are comparable with the California "mother lode" deposits. Most of the gold mines in the Juneau belt occur in the band of black slate which lies between the schists to the northeast and the greenstones to the southwest. "The complex of veins which follow this black slate is described as the main lode system of the Juneau belt." "Parallelism of vein systems and ore deposits with the outcrops of bed-rock formations...is one of the noteworthy characteristics of the district." This results in a "linear distribution of the mines." Most of the gold deposits are found