Pyrographer Alissa O'Brien rescues discarded wood to create extraordinary works highlighting the grain patterns revealed beneath the bark. For this special event, Alissa will show you the art of pyrography. Stop by the Visitor Center to view the exhibition of Alissa's wood-burnings and for the demo location at Walden. For more information, call 978-405-2082. This program is free; no registration required. Regular parking fees apply. Parking is first come, first served. On sunny days, holidays, and weekends, Walden Pond often closes due to capacity. Please check DCR Park Alerts for closures at mass.gov/parkalerts.