No, they are natural, but people have made caverns into them, and once there stood a kind of casle (Schloß) near to them, but it's already gone, nothing reminds anymore of that castle.

Try these links :

http://www.landesverband-lippe.de/externsteine
(Also in English.)

http://www.horn-badmeinberg.de/attraktionen/externsteine.html


http://www.hoexter-online.de/galerie/galerie/PPF/artikel/19
(Many pictures.)

http://www.lippe-in-nrw.de/sehenswert/externsteine.shtml

http://de.geocities.com/saubereexternsteine
That's how it might look there at high times. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />

The problem with them is, that they are not only touristical attractions, but also being visited by esoterical folks. Some say that Neo-Nazis like them, too. As a result, most of the web-pages dealing with them are not geological oriented, by rather esoterical oriented.


When you find a big kettle of crazy, it's best not to stir it.
--Dilbert cartoon

"Interplay.some zombiefied unlife thing going on there" - skavenhorde at RPGWatch