Four times a month, at or near full moon, rangers lead this two-hour hike. You must make reservations in person at the visitor center on the morning of the hike. Reservations are free but often fill up by 9 AM. Learn more about these hikes, and about the full array of the park's astronomy programs, at www.nps.gov/brca/planyourvisit/astronomyprograms.htm.
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