I have an assortment of textures, C4D materials and TwistedBrush clips of down load on my website. If you do not have either TwistedBrush or C4D you can still use the textures as they are just standard image file formats.
Hope they will be of use to someone. Regards Bishka
In the past couple of years I have visited StoneHenge and took a lot of photos,here are 3 512x512 images to use with your brushes. The above images were cropped from 3648 x 2736 photos, do let me know if they are useful.