Some errors in this entry:
The site name should be: Posterholt (45860)
The bottom line of the description also has the wrong monument id and link. It should point to http://www.rijksmonumenten.nl/monument/45860/terrein-waarin-sporen-van-bewoning-enof-begraving/posterholt/
All the other information in the entry is correct.
Something is not right. This message is just to keep things from messing up down the road