Where: California · North America · approx. 37.27, -122.41 (vicinity only)
Why this spot: San Mateo coast pocket gravels yielding small agates and jaspers
What turns up: small agate, jasper, carnelian-toned pebbles
Access: Gray area.
California state beaches technically limit removal of materials, so keep any take token or none.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.