Explore stunning cave hikes in Illinois with towering sandstone cliffs, hidden rock shelters, and dramatic natural arches waiting along scenic forest trails.

Explore Effigy Mounds in Iowa, where ancient Indigenous earthworks, forested trails, and Mississippi River views reveal America’s earliest stories.

Big Stone Lake State Park occupies prime lakefront property on the eastern shore. The park offers hiking trails that take you ...

A Quebec landowner says huge stone formations on his property could point to evidence of a previously unknown chapter in ...

If someone showed you photos of Paint Mines Interpretive Park without context, you’d probably guess they were taken on ...

There are many open questions about how our planet formed 4.55 billion years ago: When did plate tectonics start? When did the Earth's mantle begin to vigorously circulate in a process called ...

Utah’s spellbinding red-rock desert and high-altitude forests are just a few of the wonders to discover in heavenly Zion.

You don't have to travel far to see some of the world's most stunning natural wonders. From shimmering turquoise lakes to majestic mountaintops, these are the places in each state that are sure to ...

While hiking deep in the Great Smoky Mountains National Park, explorers stumbled upon bizarre, ancient-looking rock formations—with no clear origin or explanation. Were they built by early settlers, ...

NASA’s Curiosity rover investigates boxwork rock formations on Mount Sharp to gather evidence of ancient groundwater on Mars.

Editor's note: Este artículo está traducido al español. Environmentalists are petitioning federal authorities to protect a rare yellow sunflower threatened by the millions of visitors who flock to Red ...

As Earth Month approaches, many people are looking for meaningful ways to give back to Hawaiʻi and to support the long-term health of the Islands they love. Hawaiʻi’s native forests play a vital role ...