The coastline is often inaccessible, and includes rocky cliffs and hills, streams and tide pools.

The sparsely populated interior territory further inland is characterized by rugged, often steep mountains, bisected by rivers and their typically narrow valleys and canyons, and dense redwood, Douglas fir, and oak forests.

The climate can range from coast side lands drenched with fog in mild winters and summers to inland reaches baked by hot sunshine on long summer days, which, at higher elevations, can be blanketed with snow in winter.

"[4] A segment of the coastline in Mendocino and Humboldt Counties is known as the Lost Coast, and is only accessible by a few back roads.

Redwoods are also found in many other State and local parks, most of which are located along Highway 101 throughout the far North Coast.