It is said that in the past, swordsmiths in the Hino River system of Fukui Prefecture used this area for collecting materials. Although it's not very large, I personally think it looks amazing. The silver object in the photo is a magnet. It seems to contain a significant amount of iron. The size may be difficult to gauge, but I've included a photo comparing it to an IQOS box for reference. I hope you'll consider adding this to your collection. I will answer any questions you may have to the best of my ability.