The Owakudani Valley in Hakone, Japan, is a large crater with a large number of volcanic eruptions 3,000 years ago. Owakudani is still an active, boiling, sulfur-rich pool with huge vents that emit hydrogen sulfide and sulfur dioxide from steam and volcanic fumes. Let the whole area have a strong egg flavor. The favorite of visitors to the big boiling valley is to eat the eggs here. Owakudani Black eggs are regular eggs cooked in a natural hot pool. The sulfur in the water darkens the eggshell and gives it a special aroma. The locals said that eating this kind of egg can prolong life. Eggs are cooked on the top of the mountain and visitors can go on foot or take the cableway. At the top of the mountain, you can see the magnificent mountain views. The most important thing is to eat eggs there. There is a common wooden table on the top of the mountain, where visitors can sit and eat eggs while watching the scenery. This black egg is very famous in Hakone, so these six bags of black eggs are sold in many shops in the local town, about 500 yen a bag.