Located in the city of Monterey, Salinas River State Beach - Monterey Dunes Entrance is the southern access point to the half-mile long and wide Salinas River State Beach in the town of Moss Landing. Salinas River State Beach - Monterey Dunes Entrance is situated in front of the Old Salinas River and is surrounded by agriculture fields. Salinas River State Beach - Monterey Dunes Entrance is a well-known destination for fishing, wildlife watching, and beachcombing.