|Outcrop of Point Reyes Conglomerate|
The intriguing rock exposure in front of you is part of a formation that caps the highest hills in this area. The Point Reyes Conglomerate is a formation consisting of a sandy matrix embedded with pebbles, cobblestones, and boulders. Geologists estimate that the formation may be over 50 million years old.
Using less formal terminology, the conglomerate has been described as geologic cookie batter .
|Features of exposed sandstone and Point Reyes Conglomerate|
Watch out for similar conglomerate outcrops and sandstone features while taking a rest on your way down to or up from the lighthouse plateau.
|Lighthouse plateau downstairs|
References and related posts
 Point Reyes Lighthouse: www.ptreyes.org/activities/point-reyes-lighthouse.
 Point Reyes Conglomerate: www.ucmp.berkeley.edu/education/dynamic/session6/sess6_sign.htm.
 Lighthouse, Point Reyes National Seashore, National Park Service, Marin Count: bahiker.com/northbayhikes/prlighthouse.html.