Also weren't there big stone giants living in Misty Mountains (even in the Hobbit movie there was a scene with them I think)? So that could explain a lot of inc

Also weren't there big stone giants living in Misty Mountains (even in the Hobbit movie there was a scene with them I think)? So that could explain a lot of inconsistent geology as stone giants could do a lot of "terraforming" during their battles. Over thousands of years they could have reshaped the original landscape.