Archaeological site with shell fragments, discovery features ocean's impact.
Stop 3: Signal Peak Tour Throughout your hike today, you may discover tiny fragments of broken shells glittering in the soil or piles of shells falling out from the cliff edge. How did these shells get there? It must be the ocean at work-or is it?Archeologists identify these sites as "middens," debris piles containing remnants of past societies-the Tongva, the Chumash, and their ancestors.