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The Thumb

From Oregon Hikers Field Guide

Revision as of 00:10, 10 August 2021 by Adamschneider (Talk | contribs)

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Descending the ridge to The Thumb (bobcat)


The Thumb (a.k.a. God's Thumb) is the southern remnant of a basalt dike formed during the late Eocene. The small cove below was created when the dike was breached and wave action began to rapidly gouge out the much softer siltstones and claystones of the Nestucca Formation which the dike had been protecting. Various stacks and rocks scattered below you near a secluded beach portend the eventual fate of The Thumb, which will become a isolated sea stack in a hundred thousand generations or so.

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