MINNESOTA ZOO'S SCARECROW ALLEY: Themed scarecrow display at the Wells Fargo Family Farm. Ends Oct. 31. Minnesota Zoo, 13000 Zoo Blvd., Apple Valley. www.mnzoo.org or 952-431-9500.
TRAIL OF TERROR: Heated indoor maze, haunted hay ride, bonfire, costume contests, "Zombie pub crawl," "Torture Chamber of Darkness," corn maze, "Club Scream" nightclub and more. 7-11 p.m. Thurs.-Sun. through Oct. 31. Minnesota Renaissance Festival grounds, 3525 W. 145th St., Shakopee. $12.95 for youths, $18.95 for adults at the gate; $9.95/$15.95 in advance at Walgreens locations. www.trailofterrorfest .com or 952-445-7361.
FRIGHTMARES OF BUCK HILL: More than 100 ghoulish characters at four haunted attractions. Also a full bar, dining, live music, bonfire and more. 7-11 p.m. most nights; 7-10 p.m. Sundays. Oct. 14-15, Oct. 20-23 and Oct. 27-30. Buck Hill, 15400 Buck Hill Road, Burnsville. $20 Wed.-Sat., $18 Sun. www.frightmares.com.
VALLEYSCARE: Indoor and outdoor mazes, scare zones, shows and "Planet Spooky" for younger children. Thurs.-Sun. through Oct. 30 (closed Oct. 13). Noon-7 p.m. Sun. (Planet Spooky only today, Oct. 16 and Oct. 23), 7 p.m.-midnight Thurs.-Fri., noon-midnight Sat., noon-11 p.m. Oct. 30. $9.99-$41.99. Valleyfair, Hwy. 101 and Valleyfair Dr., Shakopee. 952-445-7600.
MORE GRAVE TRUTHS: Historical cemetery tour with actors portraying spirits at Lakeside Cemetery in Hastings. Tour departs from the LeDuc Historic Estate, 1629 Vermillion St., Hastings. Tours run every hour from 2-8 p.m. Oct. 15. $5; free for Dakota County Historical Society members. www.dakotahistory.org.
PARANORMAL ACTIVITY REVEALED: The "Hastings Paranormal Team" will present some of its findings during a series of library events in October. 11 a.m.-1 p.m. Sat., Galaxie Library, Apple Valley; 3:30-5:30 p.m. Oct. 18, Burnhaven Library, Burnsville; 1:30-3:30 Oct. 19, Inver Hills Library, Inver Grove Heights; 2-4 p.m. Oct. 22, Pleasant Hill Library, Hastings; 6:30-8 p.m. Oct. 27, South St. Paul Library; 2-4 p.m. Oct. 29, Robert Trail Library, Rosemount. For more information, see www. startribune.com/a710.
APPLE VALLEY COSTUME EXCHANGE: Drop off gently used costumes 10 a.m.-3 p.m. Oct. 20-21, pick up a new one 10 a.m.- 11:30 a.m. Oct. 22. Those who cannot find a new costume will get a Halloween grab bag instead. Apple Valley Community Center, 14603 Hayes Rd. Free. 952-953-2300.
LAKEVILLE HAUNTED FOREST: Friendly costumed characters in trick-or-treat maze. All ages; families welcome. 5:30-8:30 p.m. Oct. 22, North Park, 17100 Ipava Av. $10 per carload or $3 per person, plus food shelf donation. www.startribune.com/a706 or 952-985-4600.