Warning about access to Brynich Caravan Club Site

We have just returned from a wet but enjoyable break at your Brynich Caravan Club site in Brecon, Wales.
 
I would like to bring to your attention a potential problem for other users of the site regarding the current access.  As you approach the site from the main road there is a blind left hand bend from which you need to turn right into the site.  This access road has a solid white line in the middle encouraging users to keep tight to the edge.  We were unaware that the site entrance was immediately turn right on the bend, as we had not visited before and therefore unfortunately caught the back of our caravan on the small low wall on the bend.  We were then surprised to be informed by the warden that we were the third outfit just that day to do the same!
 
Please can the Club put a warning in the handbook/website to stop other members causing hundreds of pounds worth of damage to their caravans/motorhomes.  We would have certainly benefitted from that as up to now we have enjoyed 7 years of trouble free caravanning.