"Owakudani, meaning the Great Boiling Valley, is located in the mountain town of Hokane. One can take an aerial tram up to the hot springs, or walk up the 1 km path. On clear days either route delivers spectacular views of the ominous Mt. Fuji. Once the springs are reached, kuro-tamago, or black eggs, can be purchased five at a time. The eggs are ordinary chicken eggs but the shell turns black due to being boiled in the hot sulfur spring. Local tradition holds that for each black egg eaten, seven years is added to one's life. However, some say that eating more than two is not recommended." - Steven Perez from Bookmarklet