"Frodo peering forward saw in the distance two great rocks approaching: like great pinnacles or pillars of stone they seemed. Tall and sheer and ominous they stood upon either side of the stream. A narrow gap appeared between them, and the River swept the boats toward it..." 

Warhammer LOTR. The statues of Argonath are made of plastic and measure 70 mm height.

The trees and hills are not for sale. Only the statues.