Fear is the secret to happy marriages, lasting friendships, and the final ingredient in numerous madman-created serums. Access your most practical emotion with today's Groupon: for $20, you get two admissions to Terror Cave in Pacific (a $40 value).
Fashioned by the minds behind the Eureka Butcher and enhanced by Missouri's distinct geological makeup, Terror Cave plunges guests into one of the world's largest subterranean spook-fests. Groups navigate through 55,000 square feet that make up a natural underground cave, sliding feet along uneven terrain and dodging the fissure's undead denizens. Like most early airplane models, the ecological attraction has no doors or windows, thereby preventing foolhardy escape attempts. Terror Cave recommends that small children, expectant mothers, and overly jumpy wallabies avoid its cavernous haunts, which go on grotto-patrol Friday and Saturday evenings from 7 p.m. to midnight.