Weekly Photo Challenge: Grand (Glacial Potholes!)

For this week’s photo challenge, I’m taking you back to the summer of 2008 in my home state of Massachuestts. Our destination is Shelburne Falls, a quintessential New England town along the Mohawk Trail and Deerfield River.  Isn’t it grand?

shellburnefallsdeerfieldriver

At the end of the last Ice Age, glaciers covering this area began to recede, swirling silt and granite in a scouring motion that drilled holes in the bedrock below.

shelburnefallspotholeoverview2

Shelburne Falls pothole overview 1

As a result of the constant whirling of granite stones, the potholes (known geologically as “kettles”) took on a remarkably symmetrical and round shape.

Shelburne Falls pothole with waterfall

Shelburne Falls round pothole

Shelburne Falls round pothole closeup

Since 2002, access to the potholes is prohibited due to hazardous conditions and numerous injuries.

Shelburne Falls Dam Signage

However, because this is Massachusetts, no one pays attention to the law, and the police know it’s useless to enforce…especially on hot August days! 😉

Shelburne Falls potholes with people

Shelburne Falls potholes with people 2

There are more than 50 potholes to explore, ranging in size from 6″ to 39′ in diameter.

Young explorers among the Shelburne Falls potholes

The shadings and striations in the ancient granite are a grand geological sight.

Shelburne Falls color striations

Shelburne Falls color striations 2

I hope you enjoyed this testament to the grand power of time, ice, and rock!   All glacial pothole photos taken on 8/17/08, copyright Terrence Mulhern,

Shelburne Falls color striations in rock with flower

Be sure to check out other interpretations of this week’s challenge at the Zemanta related links below!

Until next time….

🙂 🙂 🙂