I set out to find the upper end of an abandon road still visible in the remaining property boundaries. A neighbor of 15 years was unaware of this road but knew that cyclists liked the connector leading to Capital Highway.
Saturday, November 20, 2021
45.4813306, -122.6818936
45.4804694, -122.6808917
google map 
45.4802389, -122.6813056
BOUNDARY 45.4795976, -122.6856309
BOUNDARY 45.4838124, -122.6774168
The other end of the forgotten road might have lead to the Chart House Switch Back which I have observed twice but not followed it to its conclusion.