Virtual Guidebook to the Northern California Coast and Coast Ranges
Founders Grove on the Dyerville Flats
Humboldt Redwoods State Park California


The Dyerville Flats, at the confluence of the South Fork and main Eel River, are famous for some of the most impressive redwood groves. The Founders Grove honors the founders of the Save the Redwoods League, with a monument at the base of the beautiful Founders Tree.

Further back in the grove stood a larger tree known as the Dyerville Giant, always considered to be one of the very tallest. In March 1991 several adjacent trees toppled and brought it down. Measurements after its fall indicated it may well have been the tallest tree in the world at the time, around 370 feet.

At the very back of the grove there is an inconspicuous plaque commemorating Laura and James Mahan, who while hiking here in 1924, discovered that logging had begun and some of the huge trees were already down. They raised the alarm in Eureka and Sacramento and with the help of conservationists, the state government, and the lumber company, logging was stopped and the grove was eventually acquired for the park.



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The Founders Tree, a particularly fine specimen of coast redwood, named for the founders of the Save the Redwoods Association

(June 24, 2010)


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The Dyerville Giant, once one of the world's tallest trees, fell in 1991

(June 24, 2010)


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The upturned root crown of the fallen Dyerville Giant demonstrate the shallowness of the redwood's root system

(June 24, 2010)


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Oxalis covers the forest floor in this part of the Founders Grove

(June 24, 2010)


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An excellent nature trail winds through the fern-filled old growth redwood forest at the Founders Grove

(June 24, 2010)


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Laura and James Mahan, local residents and proponents of redwood grove protection, discovered logging had begun here in 1924 and gave the alarm, leading eventually to acquisition and preservation of the Founders Grove

(June 24, 2010)


Next Locality: Federation Grove