You can left your car on the Castle's parking (not free one) or in Swiebodzice near yew (polish cis) Bolko. The cache is near the entrance to Institute of Geophysics PAN, in the rests of pillbox. To reach the cache you have to go around the castle, there is normal forest way there, you don't need to brake any rules or climb.
Remark: to open the cache you have to turn upper side left one quadrant and pull up - remember the position, it will be easier to close it later.
Near the cache you can see the rests of technical infrastructure used to build tunels under the castle (mainly foundations and pillboxes) and (at least) two entrances to tunnels (one of them to IG PAN, second one concreted).
Je moet ingelogd zijn om de hints te zien