Communication of information between neurons is accomplished by movement of chemicals across a small gap called the synapse. Chemicals, called neurotransmitters, are released from one neuron at the presynaptic nerve terminal.
Follow Trail 12 until it runs back into trail 1 and familiar sights and then you are only about 200 yards from the great Cumberland Falls. To the best of my guessing ability I would say this loop was about 8.5 miles long which took us about 3 hours and 45 minutes.
The photo at right shows the point where the Cumberland River begins, with the Poor Fork flowing in from the right and the Clover Fork on the left. The exception to the mild rapids is at and for a few miles below the Cumberland Falls. The amazing 68ft falls is a popular tourist destination bordered by a state park.