Topanga Formation Rock - Rancho Mission Viejo, CA
Posted by: 
bluesnote
N 33° 31.445 W 117° 37.354
11S E 442188 N 3709562
In this giant rock display, holes can be seen that were made thousands of years ago from Native Americans.
Waymark Code: WMQR0A
Location: California, United States
Date Posted: 03/21/2016
Views: 1
The plaque says, "This fossil-rich sandstone was found locally from within the Topanga Formation, which was deposited during the Miocene epoch. The fossils and sandstone were deposited in a shallow sea that once occupied this area. Fossils include clams, scallops, and other marine life. Also present in this rock is evidence where Native Americans utilized the hard rock surface to shell and pound acorns during food preparation."
Type: Bedrock Mortar
How did you find this "Ancient Evidence": Geocaching
Terrain Rating: 
Trailhead: Not Listed
|
Visit Instructions: To log your visit to this Waymark, post a picture of your GPSr next to the artifact. Post a second, wider picture to show the "Ancient Evidence" in context.