Agua Chinon Geology Hike to Both Sides of The Sinks


Come along with us to visit one of the most photographed and famous sites on the Irvine Ranch Natural Landmarks – The Sinks. This interpretative program will begin with a hike along a riparian corridor currently being restored with native plants and will visit both east and west sides of The Sinks.  Along the way we’ll talk about the geologic processes that over millions of years created the geologic features of The Sinks, Loma Ridge, and Agua Chinon Creek.

This hike involves several steep climbs and descents. Please come prepared with a day pack, water and closed toe sturdy shoes or boots, snacks, sunscreen and all other necessary elements to keep you healthy on the trail. This activity originates in the City of Irvine and travels into OC Parks’ Limestone Canyon Nature Preserve.

All participants must carry their own day pack and water and be comfortable hiking an average moving pace of 3 miles per hour uphill and downhill. Please make sure you bring a minimum of 70 oz. (2 quarts) of water and trail snacks.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land.

Activity Details Led by IRC

Sunday, April 15, 2018
7:30 am - 12:30 pm
Duration (hours:minutes):
City of Irvine
Irvine Open Space Preserve
Staging Area:
Portola - Agua Chinon
8.5 miles
Elevation Change:
1200 feet
Minimum Age:
Spaces Left:
14 of 20

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