Missing terrain textures?

Robin Linden suggested I repost my question here.

I cannot find the terrain textures used on the greyish hilltop in the Miller peninsula. Do they exist somewhere? I am trying to match some prim textures to the terrain.

And no, they are not in my library or in my inventory. A Linden employee confirmed that they were not there and that I need to ask in the forums.

Tyg, sending it to you in world. Not all the terrain textures are available for immediate use, but we're always happy to supply what we can when/as needed!