I have seen a great wall in bot. gdn? on the net and have been told it is done with hypertufa. I found the site when googling images for "fernery"

www.bibsociety.org/.../pictures/view_all.nhtml. in this site.

Can someone advise me how this is done or is it blobs of mixture gradually built up until you have your desired effect.

also can someone advise me how to post a picture to a message in a new topic. I wanted to post just the pic of the wall in the fernery.

Regards

Deeinoz