Natural Bridges State Park during monarch butterfly migration October 2016
Watch with wonder as Monarchs flutter at California's Pismo Beach Butterfly Grove
30for30 John Hartley
Natural Bridge State Park is a Massachusetts state park located in the city of North Adams in the northwestern part of the state. Named for its natural bridge of white marble, unique in North America, the park also offers woodland walks with views of a dam made of white marble, and a picturesque old marble quarry.
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