Yes but to give it a complete immunity? Mountaineer's can still get killed by rocks, heck climbing up mountains give them more of a vunerability.
All it does is allow a free switch in to sweep. Yippeee.
yes, little blue dots, but look at the pokemon with compound eyes, they have big big eyes.
Plus the idea is that it has a hard shell, strengthened by ice, granting it some immunity to Rock.
Why not make it an Ice type Solid Rock then? Lower effective hits rather than completly remove them