fajrdrako | The Cumberland Gap...

A friend of mine was talking about the Cumberland Gap, which she had recently visited. I didn't know what it was, so I looked it up. Impressive.

The dictionary didn't help me much; one of the synonyms it listed for 'gap' was 'chasm'. I thought a gap was something you could travel through, like the Gap of Rohan, not something that stopped you.

So what's the difference between a gap and a pass?