Bureau of Land Management

The Arcata Field Office is responsible for the administration of natural resources, lands, and mineral programs on approximately 200,000 acres of public land in Northwestern California. The Area includes the 60,000 acre King Range National Conservation Area and the 7,474 acre Headwaters Forest Reserve. 

Coastal Monument - Trinidad
Headwaters Forest Reserve   MAP
Samoa Sand Dunes (beach/bay area north of the main channel)  
The Southern Humboldt Bay Beaches  
Lost Coast Headlands  
King Range National Conservation Area/Lost Coast
California Backpacking the Lost Coast  Lost Coast Trails
MAPS

You can also get the America the Beautiful National Parks and Federal Recreational Lands Passes at the Arcata Field Office.