Various interpretive trails.
From South of Seattle (Tacoma, Olympia, etc.) - Take Interstate 5 northbound and get off at Exit 169. At stop light, turn left onto NE 45th Street going westbound. Follow 45th through intersection. At Stone Way bear right onto N Midvale Place, then left onto N 46th Street. Stay in right lane and go under Aurora overpass. Continue west on 46th, which curves into NW Market Street. Follow NW Market westbound across 15th Ave NW and through the Ballard business district to the Taco Time. At Taco Time bear left onto NW 54th Street. Turn left immediately after the Lockspot Cafe. This is a city parking lot.
http://www.tripleblaze.com/trail.php?c=3&i=6158