Keystone Safari in Grove City will operate its Trick or Treat & Haunted Glow Zipline event from 6 to 9 p.m. Oct. 30 and 31.

Guests of all ages are invited to explore the walk-thru portion of Keystone Safari after dark, where Halloween festivities, candy stations, themed photo opportunities and nighttime adventures await. Candy stations are positioned throughout the walk-through area, allowing children to collect treats while enjoying the park's festive Halloween atmosphere.

Participants ages 4 and up can choose from three different course levels for the zip line. The Haunted Glow Zipline requires an additional fee. Walk-thru park admission is required to participate, according to Keystone Safari.