Arboretum at Penn State Pumpkin Fest 2017 1

Arboretum at Penn State Pumpkin Fest 2017 1

Arboretum at Penn State Pumpkin Fest 2017 1

Visitors to the The Arboretum at Penn State's Pumpkin Festival on Oct. 14-15 were treated to a surprise in the limestone cave of the Children's Garden: an ultraviolet-light painting of the headless horseman galloping under the full moon.

IMAGE: Laura Waldhier
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