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14/10/2026

Why did a $26.7 million effort to preserve Miami’s history turn into an argument about a septic tank?
Archaeologists working ahead of a luxury condo development discovered the Miami Circle in 1998: a 38-foot arrangement of holes carved directly into limestone. Florida and Miami-Dade County helped buy the property to protect it. Florida Memory
An archaeologist questioned whether the circle might be part of a 1950s septic system. But the original plumbing plans showed wastewater flowing away from it, and excavation evidence showed the tank had actually cut through older holes. The circle came first. Archaeology Magazine
The site is now recognized as an ancient Indigenous landmark associated with the Tequesta people. Visitors can explore the park, but the original archaeological features remain covered for protection. Greater Miami & Miami Beach
📍 Find places to explore along the Miami River Greenway:
https://rungroop.com/places-to-run/trail/miami-river-greenway-miami-fl
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13/10/2026

Selling romance goes well beyond the diamond ring.

Clinton Washburn promoted a honeymoon escape with 50 cottages, no electricity, and no indoor plumbing. Publicity helped attract 164 couples to the place once called Hog Island.

The resort was temporary. Its romantic rebranding proved much more durable.

Explore Honeymoon Island State Park Loop on RunGroop:
https://rungroop.com/places-to-run/trail/honeymoon-island-state-park-loop-palm-harbor-fl

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12/10/2026

Not every mammoth towered over people.

In 1994, scientists discovered a nearly complete pygmy mammoth skeleton on California’s Santa Rosa Island. These smaller mammoths evolved from much larger ancestors, leaving an extraordinary record of how island life can reshape an animal.

Explore Santa Rosa Island’s Carrington Point Road Connector on RunGroop:
https://rungroop.com/places-to-run/trail/carrington-point-road-connector-isla-vista-ca

Start a running club:
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09/10/2026

There’s a fire tucked beneath a waterfall near Buffalo—and its fuel comes out of the rock.

A natural gas seep supplies the flame at Eternal Flame Falls. The sheltered pocket helps it burn beside the falling water, although it occasionally goes out and is relit.

Explore Eternal Flame Trail on RunGroop:
https://rungroop.com/places-to-run/trail/eternal-flame-trail-north-boston-ny

Start a running club:
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08/10/2026

Workers digging at Ohio’s Huffman Dam in 1919 thought they’d found a fossil turtle. Instead, they uncovered a remarkably complete, 14½-inch trilobite.

Nicknamed “Pete,” the fossil eventually went to the Smithsonian.

Explore the Wright Brothers–Huffman Prairie Bikeway in Fairborn on RunGroop:
https://rungroop.com/places-to-run/trail/wright-brothers-huffman-prairie-bikeway-fairborn-oh

Start a running club:
https://rungroop.com/starting-a-running-club

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07/10/2026

Before Amana was a name on refrigerators, it was a group of Iowa villages built around communal living.

Members worked without wages, and community income helped provide their housing, food, and medical care. That system lasted nearly eighty years.

The community reorganized in 1932. Two years later, a beverage-cooler business began there, eventually becoming Amana Refrigeration. The appliance name carries a much older story.

Visit the historic Amana Colonies and explore the nearby Amana Nature Trail Green Route on RunGroop:
https://rungroop.com/places-to-run/trail/amana-nature-trail-green-route-homestead-ia

Start a running club:
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06/10/2026

Britain restricted skilled textile workers from emigrating to protect its manufacturing advantage. Samuel Slater got around that by passing as a farmer.

He helped recreate British spinning machinery in Pawtucket. The surrounding valley became an industrial powerhouse, and the Blackstone earned the nickname America’s “hardest-working river.”

Explore the Blackstone River Bikeway in Valley Falls, Rhode Island, on RunGroop:
https://rungroop.com/places-to-run/trail/blackstone-river-bikeway-valley-falls-ri

Start a running club:
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Promote and market your 5K:
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05/10/2026

One of the biggest discoveries in life’s fossil history came from organisms too small to see without a microscope.

Inside thin slices of Gunflint chert, scientists found tiny fossilized microbes. The rock was about 1.88 billion years old. Those preserved cells helped push the known fossil record back more than a billion years.

The Gunflint Formation stretches from Minnesota into Ontario. You can explore its namesake lake area through the Gunflint Lake trail connector on RunGroop.

📍 Find the trail:
[https://rungroop.com/places-to-run/trail/gunflint-lake-g-trail-connect-pine-mountain-trailer-court-mn](https://rungroop.com/places-to-run/trail/gunflint-lake-g-trail-connect-pine-mountain-trailer-court-mn)

👟 Start a running club:
[https://rungroop.com/starting-a-running-club](https://rungroop.com/starting-a-running-club)

🏁 Organizing a 5K? Promote your race:
[https://rungroop.com/list-your-race](https://rungroop.com/list-your-race)

🤝 Find a running partner:
[https://rungroop.com/community](https://rungroop.com/community)

04/10/2026

What the hell is a fen? The answer explains why Jackson Bog isn’t actually a bog.

Bogs depend on rainfall, while fens receive groundwater. At Jackson Bog near Massillon, Ohio, cold springs feed a wetland that shelters unusual plants—including sundews, whose sticky leaves trap and digest insects.

Explore Jackson Bog State Nature Preserve Loop on RunGroop:
https://rungroop.com/places-to-run/trail/jackson-bog-state-nature-preserve-loop-massillon-oh

Start a running club:
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Promote and market your 5K:
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03/10/2026

In 1969, the government tried extracting natural gas in Colorado with a nuclear explosion.

The blast broke open the rock. But the gas contained radioactive material, making it unmarketable. Project Rulison became a striking example of how “peaceful” nuclear experiments could backfire.

Explore nearby Cache Creek Trail #1902 on RunGroop. The route does not take you to ground zero:
https://rungroop.com/places-to-run/trail/cache-creek-trail-1902-rulison-co

Start a running club:
https://rungroop.com/starting-a-running-club

Find a running partner:
https://rungroop.com/community

Promote and market your 5K:
https://rungroop.com/list-your-race

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