Víšek – mysterious storm balls
Around Víšek, interesting stone balls can be found from time to time. There are often seen in the fields after major storms. Where do they come from?
What will you see? Ferruginized sandstone outcrops, a rock tower, storm balls ... Víšek is an inconspicuous butte formed of considerably ferruginized sandstone. Iron in the local sandstone comes from the volcanic veins below the top. You can see ferruginous crust, iron tubes, as well as incrustations of interesting shapes. Probably the most interesting are small spherical concretions formed of considerably ferruginized sandstone. They are called storm balls, because they are often found after storms, when heavy rain washes them up from the surrounding soil. They can also be seen directly in rock outcrops.
- Easily accessible