Grafton, New Hampshire
An endless back road digs deep into the landscape, but nothing prepares you for this “mine in the sky,” with its towering cliffs, canyons, mysterious holes, and dramatic overlooks to Mount Cardigan. Sam Ruggles kept his 1803 discovery a secret, but the ground still glitters with leftover mica, quartz, and 150 other intriguing minerals, while everywhere the tap-tap-tap of hopeful hammers rings out. Best Geology Lesson
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