He began harvesting tanoak bark from the canyon, a lucrative source of income at the time. The bark was used to manufacture tannic acid, necessary to the growing leather tanning industry located in Santa Cruz, about 40 miles to the north. Notley constructed a landing at the mouth of the Palo Colorado River like that at Bixby Landing to the south. The tanbark was harvested from the isolated trees inland, corded, brought out by mule back or using wooden sleds, and loaded by cable onto waiting vessels anchored offshore at Notley's Landing. A point on the Palo Colorado Road is still nicknamed "The Hoist" because of the very steep road which required wagon-loads of tanbark and lumber to be hoisted by block and tackle hitched to oxen. The old block and tackle on a beam is still mounted between mailboxes.