Humboldt Redwoods State Park is a state park of California, United States, containing Rockefeller Forest, the world’s largest remaining contiguous old-growth forest of coast redwoods. It is located 30 miles (48 km) south of Eureka, California, near Weott in southern Humboldt County, within Northern California, named after the great German nineteenth-century scientist, Alexander von Humboldt. 

The park was established by the Save the Redwoods League in 1921 largely from lands purchased from the Pacific Lumber Company. Beginning with the dedication of the Raynal Bolling Memorial Grove, it has grown to become the third-largest park in the California State Park system, now containing 51,651 acres (20,902 ha) through acquisitions and gifts to the state.

The park is famed for its coast redwoods (Sequoia sempervirens), many of which grow to over 300 feet (91 m) in height. The forests on alluvial plains are almost pure redwood forest, but the forests on the slopes also contain Douglas-fir.

Over 100 of the 137 known trees over 350 feet (110 m) tall—all coast redwoods—occur in Humboldt Redwoods State Park. It is home to the 4th-tallest measured living redwood, the Stratosphere Giant, which was measured at 112.94 metres (370.5 ft) in 2004. Stratosphere Giant was the tallest known living redwood until the discovery of three taller trees in Redwood National Park; the tallest, Hyperion, measuring 115.55 metres (379.1 ft) in September 2006. Before the discovery of Hyperion, the tallest redwood ever measured was the Dyerville Giant, also in Humboldt Redwoods State Park. It was 113.4 metres (372 ft) high when it fell in March 1991. It was estimated to be 1,600 years old.

According to en.wikipedia.org; oldgrowthforest.net. Source of Photo: internet