Enriching Uranium in Happy Valley: Guided Ranger Walk at K-25 [Oak Ridge, TN]

Park Event · Manhattan Project National Historical Park, New Mexico, Tennessee · Aug 29, 2026 · 11:00 AM–12:00 PM

The largest plant site of the Manhattan Project, and the war, K-25 helped isolate the crucial uranium-235 from the more abundant uranium-238. To accomplish that goal, tens of thousands of construction workers relocated to Happy Valley. Learn more about the accomplishments of those workers, and the sacrifices it took to get there, at a ranger walk along the greenways through the former K-25 site.

• Distance: 1 mile out and back.
• Greenway is asphalt.
• No elevation gain.

About National Park Week

National Park Week is an annual Presidentially proclaimed celebration that encourages people to discover the places, programs, experiences, and stories of the National Park Service. National Park Week 2026, “Celebrate America’s Story,” continues semiquincentennial commemorations and celebrates America’s 400+ national parks and their roles in America’s collective history. Learn more at https://go.nps.gov/NationalParkWeek2026.

Source: National Park Service (public domain).