GeoCheckpoint Name: Ytterby-historical mine GeoCheckpoint Type: Standard GeoCheckpoint Terrain: Suitable for people in good physical condition Rating: 100%
GeoCheckpoint Description
An old mine, which once upon a time gave name to four elements of the periodical table. Yttrium (Y), erbium (Er), terbium (Tb), and ytterbium (Yb). Do not forget your detector, so you can observe the increased levels of radioactivity! :)