Penstock Ridge is so named because around the turn of the century an aqueduct that takes water from Lytle Creek near the Ranger Station was built to go up and over the ridge. The aqueduct traverses the ridge's northwestern slopes then crosses over the top of the ridge and traverses down in a southeasterly direction until it goes downhill and terminates at a penstock. There the flow of water is still used to make electricity.
"As an adolescent I aspired to lasting fame, I craved factual certainty, and I thirsted for a meaningful vision of human life - so I became a scientist. This is like becoming an archbishop so you can meet girls."