Etowah

Don't paddle in if you are claustrophobic or if you can't see daylight at the other end. As a matter of fact, don't paddle in here at all. You can sneak around the mountain.
You've just paddled a quarter mile thru a 10' diameter hole in the earth. Surprise! Now you have to immediately deal with dropping into moderate current coming in from the right. At least it's not dark anymore. Kayaking don't get much goofier.