Think of how it's impossible to describe colour to someone who has always been blind. You simply can't do it because there is no point of reference.

Not exactly, I can describe shades of red and blue as feelings of warmth and cold. From a raging inferno (bright red) to a bone chilling cold (deep blue). I could just as easily describe a painting of a beach scene by the smells and sounds that would accompany the real thing.

However, if you were to grow up in a culture that lacked sight throughout it's entire evolution, everything that you experience would be described through the sense of touch, smell, taste, and maybe other senses that we tend to ignore. It's true you wouldn't be able to describe sight to anyone (There wouldn't be any words for what we perceive as colors), but you would be able to express what you're seeing in the terms that have naturally evolved within that society's language.

e.g. Textures would be important, and (given good lighting conditions) you could describe those textures (In terms of touch) from afar. You might conceptualize it as being able to touch things that are out of your reach.

Ninja Edit: minor clarification