Finally after 7 years of driving past them, yesterday I took exit 4 to go check them out.
There is a dyke that runs alongside a small river at the base of the cliffs.
We then found ourselves on another part of the dyke. BTW that's a "gate". Thank goodness there was a sign. You can see the highway off to the left.
My travelling companions had fun too.
It was a lovely easy walk and I know I'll be going back again in the fall to check out the colours.