Pu'u O 'Umi Natural Area Reserve

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Last Updated: December 7, 2025

Pu'U O 'Umi Natural Area Reserve is a protected natural area in Hawaii, known for its diverse flora and fauna and unique geological features.


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Summary

It is located on the island of Hawaii, and visitors can enjoy hiking, birdwatching, and scenic views of the surrounding landscape.

One of the main attractions of the reserve is the Pu'U O 'Umi Natural Area Reserve Trail, a 4.5-mile hike that takes visitors through forests, grasslands, and lava fields. Along the way, hikers can see rare and endangered plants such as the Mauna Kea silversword and bird species like the Hawaiian honeycreeper.

The reserve is also home to several interesting geological formations, including the Pu'U O 'Umi cinder cone, which is thought to be around 10,000 years old. Visitors can also see lava tubes, caves, and other volcanic features, as well as evidence of ancient Hawaiian settlements.

The best time to visit Pu'U O 'Umi Natural Area Reserve is during the dry season, which runs from May to October. During this time, the trails are generally drier and easier to navigate, and visitors have a better chance of seeing wildlife and plant species.

Overall, Pu'U O 'Umi Natural Area Reserve is a must-visit destination for nature lovers and anyone interested in Hawaii's unique geological and ecological history.

       

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Park & Land Designation Reference

National Park
Large protected natural areas managed by the federal government to preserve significant landscapes, ecosystems, and cultural resources; recreation is allowed but conservation is the priority.
State Park
Public natural or recreational areas managed by a state government, typically smaller than national parks and focused on regional natural features, recreation, and education.
Local Park
Community-level parks managed by cities or counties, emphasizing recreation, playgrounds, sports, and green space close to populated areas.
Wilderness Area
The highest level of land protection in the U.S.; designated areas where nature is left essentially untouched, with no roads, structures, or motorized access permitted.
National Recreation Area
Areas set aside primarily for outdoor recreation (boating, hiking, fishing), often around reservoirs, rivers, or scenic landscapes; may allow more development.
National Conservation Area (BLM)
BLM-managed areas with special ecological, cultural, or scientific value; more protection than typical BLM land but less strict than Wilderness Areas.
State Forest
State-managed forests focused on habitat, watershed, recreation, and sustainable timber harvest.
National Forest
Federally managed lands focused on multiple use—recreation, wildlife habitat, watershed protection, and resource extraction (like timber)—unlike the stricter protections of national parks.
Wilderness
A protected area set aside to conserve specific resources—such as wildlife, habitats, or scientific features—with regulations varying widely depending on the managing agency and purpose.
Bureau of Land Management (BLM) Land
Vast federal lands managed for mixed use—recreation, grazing, mining, conservation—with fewer restrictions than national parks or forests.
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