<P> Redwood National Park headquarters is located in Crescent City, California, with a service office located in Arcata and an operations center located in Orick, California . </P> <P> Lack of money has precluded major improvements, however, and timber companies have replanted much of the logged area with non-native tree species . Coastline areas, including dunes and coastal prairie, have been invaded by exotic species, partly due to the suppression of forest fires until the 1980s . A fire management plan now allows controlled burning as one method to return the parkland to its original state . Since the redwoods were logged on the basis of accessibility, with inaccessible areas being cut last, large old - growth forest sections were isolated from one another, sometimes by many miles . In these cases it will be decades more before mature forest can return, regardless of the amount of money used to rehabilitate the ecosystem . </P> <P> The park has transformed a few logging roads into scenic public drives . These do not meet current safety standards, but funding to improve them is not available at present . Park structures such as visitor centers and employee housing also need updating to meet increasing demands . Park employees perform air and water quality surveys, monitor endangered and threatened species, and work closely with the California Coastal National Monument, which is managed by the U.S. Bureau of Land Management . In 2005, the parks were authorized to expand another 25,000 acres (100 km) to include the Mill Creek watershed . </P> <P> The Redwood National and State Parks form one of the most significant protected areas of the Northern California coastal forests ecoregion . </P>

Tall trees redwood grove located in the redwood national & state park in humboldt county