Haunted Trails
Bastyr University’s annual “Haunted Trails” is hosted in the forest behind Bastyr's Kenmore campus the weekends of October 12-13 and 19-20, the event includes frightfully enjoyable activities for teenagers and adults, as well as trick-or-treating for children ages 7 and younger.
http://hauntedtrails.org
From: Haunted Attraction Directory/ USA (All 50 States)/Washington