This foam molded "stone" retaining wall material was made in Columbus, Ohio but I found it as far from there as the Timonium
train show. Calls to Columbus hobby shops turn up nobody who stocks it and the possibility the guy who made it might now be
in a retirement center. I have used a lot of it as good, three dimensional "stone" wall material for buildings...Hobbylinc apparently does not have it, nor does, I don't think, MicroMark. I have gotten it discounted from two sources before (it ain't cheap and you use a lot in an O scale building)....but am not now sure it is still out there? It was available in several different stone patterns, which made for variety. Is this stuff still being made?