Earth's History

The geological time scale interpreted from rock strata provides a way to organize major historical events in Earth's history. Anaylsis of rock strata and the fossil record help document the existence, diversity, extinction and changes of many life forms throughout history.
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Lookout Mountain | 27:Fifty (1992)
Episode 1

Video

This episode of 27:Fifty takes place at Lookout Mountain, located in Chattanooga, Tennessee. Tim Carrier takes viewers around significant sights around the mountain, such as “Lover’s Leap,” “Fat Man’s...
Mammoth Cave | 27:Fifty (1992)
Episode 1

Video

Located near Bowling Green, Kentucky, Mammoth Cave is the longest underground cave system in the world; over three hundred miles of explored passageways. In the area known as "Gothic Avenue," visitors...
Sandy Point (S.C.) Stop 2
Episode 5

Video

This area close by, once an oyster bed, has been covered in sand and is now a beach. A shrimping boat is seen out in the opening of the Atlantic Ocean. The area has around 280 registered species of...
Peachtree Rock (S.C.) Stop 3
Episode 4

Video

A little further down the trail, Rudy and Jim come across a sandstone rock, which has cemented over time, due to the abundance of iron in the soil.
Peachtree Rock (S.C.) Stop 4
Episode 6

Video

Hardwood Forest - On lower ground, where there is much more moisture, Red Maple, Maple Leaf Viburnum, Mountain Laurel, and White Oak trees grow very well in areas like this. Rudy and Jim come across...
Peachtree Rock (S.C.) Stop 5
Episode 7

Video

Peachtree Rock – Rudy and Jim visit the actual rock in which the area gets its name. Contrary to popular belief, it is not actually a rock, but merely a large outcropping of sand held together by iron...
Jocassee Gorges (S.C.) Stop 6
Episode 10

Video

Lake Jocassee – Here, standing on a rock outcropping, Rudy and Jim analyze Lake Jocassee’s geographic features, along with the variety of trees found around the lake: White Pine, Virginia Pine, and...
Forty Acre Rock (S.C.) Stop 6
Episode 9

Video

Large masses of granite such as this one, are sometimes called “Plutons,” named after the Roman god of the underworld. This is due the hot liquid granite coming up from the ground and cooling...
Appalachian Cove (S.C.) Stop 6
Episode 12

Video

The constant stream of mist coming from the waterfall at this next stop affects the variety of plants found here. The mountain, like the forest, is ancient, and the waterfall continues to wear away...