My small hills sets (smooth grass and rocky) have been selling well, and I've decided to try offering some larger hills to complement these two sets.  So here are a couple of larger hills that otherwise match the set of 3 small smooth grassy hills.  The hills were 3D printed in PLA at fine  resolution before being painted with acrylic and flocked in a green to match the GW battlemat in the photo.

28mm wizard figure shown to illustrate size, not included. 

Size approximately: 12 x 7 and 10 x 7 inches base and 1.25 inches high.