I explored two spurs on the ride home that are supposed to connect in the middle. Northbound it got too steep for me to climb, southbound it looked passable. But God it was hot and I decided to just cruise on surface streets for the last third of the ride. I'll try it next week and then that will give me another alternate MTB path to take to work.
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."