The parkway map has big stars on it where they recommend travelers get on and off the parkway and parkway Rangers warn not to trust a Garmin if you are looking for a way off the Parkway.  Good advice.  Ours sent us down a steep, one lane (but two way), gravel path that didn’t have a single straight section over 100 feet long.  We were in the car not the motorhome so no biggie.  Just one more fun little drive forKent.