Walk amongst 66-million-year-old giants in this South Dakota park

Ole Quammen’s Depression-Era Petrified Wood Park Project

When the Great Depression hit Lemmon, South Dakota in 1930, Ole Quammen had a bold idea. The former mayor and amateur geologist put 40 jobless men to work building something huge.

They hauled 4,100 tons of petrified wood and 300 tons of grass from nearby lands. These weren’t just rocks but 66-million-year-old fossils from when the Great Plains was a steamy swamp full of life.

The park opened in 1932 with much fanfare as the world’s largest of its kind.

Today, the Petrified Wood Park stands as a monument to both ancient history and Depression-era grit.

A Former Mayor Created Jobs During The Great Depression

Ole Quammen, an amateur rock lover and former mayor of Lemmon, South Dakota, had a smart idea in 1930 as the Great Depression hit hard.

He decided to build the world’s largest petrified wood park to give jobs to the town’s men who couldn’t find work. With so many people out of jobs, Quammen put 30-40 local men to work on this unusual project.

He wanted to help his community through tough times and create a tourist spot that would bring visitors to the small town.

Workers Gathered Thousands Of Tons Of Ancient Materials

The project started in 1930 with crews of jobless men searching the countryside within 25 miles of Lemmon. They collected over 4,100 tons of petrified wood from spots across North and South Dakota.

The men also gathered about 300 tons of petrified grass from nearby areas. They picked each piece carefully and brought it back to Lemmon.

This big collection effort gave steady work to dozens of men who otherwise couldn’t feed their families during the money crisis.

Prehistoric Sea Beds Yielded Ancient Treasures

The petrified materials came from the Fox Hills and Pierre rock layers that formed under old sea beds about 66 million years ago. These Cretaceous-era layers kept a record of prehistoric life.

Many wood pieces contain traces of ancient snails, fish, and plants.

The workers learned to spot petrified wood among regular rocks and became good at taking out valuable pieces without breaking them. Their finds helped show what kinds of life once lived in what is now the Great Plains.

Swamps And Jungles Once Covered South Dakota

The Great Plains looked totally different 66 to 252 million years ago. The area around today’s Lemmon was a wet swamp filled with thick jungle plants.

Big trees and dense greenery grew well in the warm, damp climate. This green landscape changed a lot when climate shifts caused shallow seas to flood the region.

The changing setting created perfect conditions for keeping the many plants that would later become the building blocks of Quammen’s park.

Minerals Turned Ancient Trees To Stone

The stone-making process began when fallen trees and plants ended up underwater where there wasn’t much oxygen.

Over millions of years, minerals in the water slowly took the place of the plant material in the wood, cell by cell. This process kept the original look of the wood in great detail.

Silica from volcano ash in the water helped keep the cell structure of the wood.

The end result was stone that looks just like wood, with growth rings, bark textures, and other tree features.

Round Rocks From The Cannonball River Added Variety

The park builders also collected unusual round rock shapes from the Cannonball River in North Dakota. These perfectly round stones formed when minerals gathered around a center point, often a small fossil.

The round rocks added visual interest and rock variety to the park. Workers brought about 300 tons of these unique formations back to Lemmon.

The mix of materials gave Quammen and his workers more choices for creating interesting structures and displays throughout the park.

Local Men Developed Special Building Techniques

The work crews stacked the petrified wood pieces without using cement, instead relying on careful balancing. Local workers figured out special ways to handle the heavy, breakable petrified materials.

The men learned through trial and error how to build stable structures using the odd shapes of the fossilized wood.

This hands-on work kept dozens of men working during the worst years of the Depression, giving them money when few other jobs existed in the area.

The Park Featured Castles And Waterfalls Made Of Fossils

Quammen and his workers built a castle, wishing well, and waterfall entirely from the petrified materials they collected. A 300-seat cone-shaped museum building sits at the center of the 10-acre site.

The park includes many structures and displays set up to show off the natural beauty and variety of the fossils. Workers sorted materials by color, size, and type to create striking patterns and designs.

The result was a folk art masterpiece that turned ancient fossils into an amazing set of buildings.

Hundreds Attended The 1932 Grand Opening

The park held its official opening ceremony on June 7, 1932, bringing hundreds of visitors from all around the region.

South Dakota Governor Warren Green gave a talk praising the project for its clever thinking during hard times.

North Dakota Supreme Court Justice John Burke also spoke at the event, pointing out how the two states worked together to provide materials for the park.

The opening marked the success of Quammen’s vision and the start of the park’s role as a tourist spot.

The Quammen Family Faced Tragedy Soon After

Both Ole Quammen and his son David died in 1934, just two years after finishing their amazing creation. Ole’s widow, Alice Quammen, took over running the park after their deaths.

She managed the attraction for the next 20 years, keeping up the structures and welcoming visitors from across the country.

The family kept the park as a private attraction for decades, keeping Ole’s vision alive and continuing to provide jobs and draw tourists to the small South Dakota town.

Lemmon Took Over The Park In 1954

Alice Quammen transferred ownership of the park to the city of Lemmon in 1954, ensuring its long-term preservation as a public attraction.

The site gained recognition as a nationally significant example of folk art and Depression-era ingenuity.

Today, the park continues to serve Ole Quammen’s dual purpose of bringing economic benefit to Lemmon and educating visitors about geology.

The Petrified Wood Park stands as a testament to creative problem-solving during America’s worst economic crisis and preserves both ancient natural history and more recent human history for future generations.

Visiting Petrified Wood Park & Museum, South Dakota

You can visit Petrified Wood Park & Museum for free year-round on Main Avenue in Lemmon, South Dakota. Ole Quammen created this Depression-era jobs project using 66-million-year-old fossils from ancient swamplands.

The park covers a full city block with over 100 petrified wood structures, including towers reaching 30 feet high. The museum and gift shop open Memorial Day through Labor Day.

This National Register site has been preserving history since 1977.

This article was created with AI assistance and human editing.

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