In a forgotten cavern, if you descend deep enough, you will find the coin columns. There are many hundreds of such columns. Every column consists of 5 to 113 disks that resemble coins. They are made of a very shiny material, resembling gold visually and marble physically. Coins are stacked on top of each other, but not perfectly, so the columns form spiral-like structures. Sometimes they intersect.

melanocarpa.lesarbr.es/hypha/c